Wellspring Mask Ogerpon ex / Fan Rotom deck: the core, the flex slots, and what beats it

What Wellspring Mask Ogerpon ex / Fan Rotom looks like when you open the box

Across the 28 lists we counted, this deck runs 19 to 25 Pokémon, 24 to 33 Trainers and 6 to 14 Energy. Its attacks are paid for in Water.

On results pages and on stream you will see this deck written « tera-box ». That word does not point at any one card in the list, so we did not turn it into a name. The name you are reading comes from the deck's main attackers — the cards you will actually put on the table, and the ones your opponent will learn to fear.

Look at the Energy: 6 to 14 out of 60, exactly the median of the 97 decks we track. It draws neither too much nor too little, so this is not where its games are won or lost.

It sets up fast. Noctowl is a Stage 1 Pokémon: a Basic, one evolution on top, and you are attacking. Two cards instead of three. You lose fewer turns building, and you rebuild much more easily when an early knockout lands on you.

Look at the Trainers: 24 to 33 cards out of 60, against a median of 31 across the 97 decks we track. Inside that, 5 to 11 Supporters, and the rule there is strict — one a turn, even if you are holding three. The 12 to 19 Items you can play all of in the same turn. It also brings up to 4 Stadiums, and 57 of the 97 decks we track bring that many or more. Only one Stadium sits on the table at a time: the one you play sends the one already there to the discard pile.

What Tools and Stadiums do — the two Trainer families we skipped here — and why the Energy count says so much: how to read a deck list.

What the cards in this deck's name actually do

Wellspring Mask Ogerpon ex and Fan Rotom give this deck its name. Here is what is written on them.

Wellspring Mask Ogerpon ex is in all 28 lists, 2 copies of it.

Fan Rotom is in all 28 lists, 2 copies of it. Its Ability is called Fan Call, and here is what is printed on it, word for word: « Once during your first turn, you may search your deck for up to 3 {C} Pokémon with 100 HP or less, reveal them, and put them into your hand. Then, shuffle your deck. You can't use more than 1 Fan Call Ability during your turn. »

How Wellspring Mask Ogerpon ex / Fan Rotom actually wins

Wellspring Mask Ogerpon ex attacks with Torrential Pump for 100. It needs 3 Energy, 1 Water and 2 Colorless attached, and it has 210 HP. And the number is not everything the card says. There is one more line printed under the attack, and it is the one everybody skips: "You may shuffle 3 Energy attached to this Pokémon into your deck. If you do, this attack also does 120 damage to 1 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)"

The cost of Torrential Pump decides your first few turns. You only get to attach one Energy a turn, and that attack asks for 3. On your own attachments alone, your first real swing lands on turn 3. Except you are not on your own. Teal Mask Ogerpon ex, a single copy in the list, has an Ability called Teal Dance: it attaches Energy from your hand on top of the one you already play. An Ability costs you nothing: not your attack, not your card for the turn. One copy in the whole list, so do not build your turn around it. When it shows up it buys you a turn, and that is already a lot.

Good news on mobility: pulling Wellspring Mask Ogerpon ex back to the Bench costs you 1 Energy attached to it, and that is all. Retreating does not cost you your turn, so you step back and swing anyway. That matters enormously the day your opponent lands something nasty on it.

Wellspring Mask Ogerpon ex carries the "ex" suffix, and your opponent takes 2 Prize cards instead of one when Wellspring Mask Ogerpon ex falls. They need 6 to win: 3 well-placed knockouts on that card beat you, where it would take 6 anywhere else on your Bench.

The attackers in the deck's core, with their best attack, its cost and their Weakness

Pokémon	HP	Attack	Damage	Cost	Weakness	Retreat
Close Wellspring Mask Ogerpon exBasic	210	Torrential Pump	100	Water + Colorless + Colorless	Lightning ×2	1
Close Fan RotomBasic	70	Assault Landing	70	Colorless	Lightning ×2	1
Close NoctowlStage 1	100	Speed Wing	60	Colorless + Colorless	Lightning ×2	1
Close HoothootBasic	70	Triple Stab	10×	Colorless	Lightning ×2	1

The core: the 10 cards every list runs

These 10 cards appear in all 28 lists, without a single exception. That is 27 of the 60 slots. The other 33 are decided player by player.

Look at how those 27 slots break down: 14 Trainers, 12 Pokémon, 1 Energy. Trainers outweigh everything else put together, which is the mark of a deck that goes and fetches its cards rather than waiting to draw them.

10 of those 10 cards do not sit at the same count from list to list: Hoothoot (3 to 4), Noctowl (3 to 4) and Fan Rotom (1 to 2), plus 7 more. Add those spreads up and you get 15 copies the 28 lists do not agree on, inside the core itself.

What "3 to 4" means in the copies column, what the "TWM 130" code under each name is for, and why we count dozens of lists instead of one: how to read a deck list.

The cards present in every list counted, with the number of copies

Copies	Card	Printing	Kind	Rotation
3–4	Close Hoothoot	SCR 114	Pokémon	leaves
3–4	Close Noctowl	SCR 115	Pokémon	leaves
1–2	Close Fan Rotom	SCR 118	Pokémon	leaves
1–2	Close Wellspring Mask Ogerpon ex	TWM 64	Pokémon	leaves
2–4	Close Poké Pad	POR 81	Trainer	stays
1–3	Close Area Zero Underdepths	SCR 131	Trainer	leaves
2–4	Close Crispin	SCR 133	Trainer	leaves
1–3	Close Boss's Orders	MEG 114	Trainer	stays
1–2	Close Night Stretcher	ASC 196	Trainer	leaves
1–3	Water Energy	MEE 3	Energy	stays

The 87 cards that change from list to list

87 cards fight over the 33 slots that are left: 11 above three lists in four, 57 below one in four, and the percentage on each row says how many players took it.

The most agreed on first: Ultra Ball at 96 %, Lillie's Clefairy ex at 93 % and Grass Energy at 93 %, plus 8 more above 75 %. Add those to the core and you have the common build.

The dividing line runs through Buddy-Buddy Poffin, at 50 %: 14 of 28 players took it, 14 put something else there. The ones who run it bring 1 copy. Right at the bottom of the table, Fighting Energy (6 lists out of 28) and Moltres (5 lists out of 28).

Why a card at 45 % is not a bad card, and what order to buy all this in: how to read a deck list.

The cards some lists run and others don't, most common first

Lists running it	Card	Copies	Printing	Kind
96 %27/28	Close Ultra Ball	1–4	MEG 131	Trainer
93 %26/28	Close Lillie's Clefairy ex	1–2	JTG 56	Pokémon
93 %26/28	Grass Energy	1–6	MEE 1	Energy
93 %26/28	Psychic Energy	1–3	MEE 5	Energy
89 %25/28	Close Fezandipiti ex	1	ASC 142	Pokémon
89 %25/28	Close Latias ex	1	SSP 76	Pokémon
86 %24/28	Close Energy Switch	1–3	MEG 115	Trainer
82 %23/28	Close Teal Mask Ogerpon ex	1–3	TWM 25	Pokémon
82 %23/28	Close Tera Orb	1–3	SSP 189	Trainer
79 %22/28	Lightning Energy	1–2	MEE 4	Energy
75 %21/28	Close Sparkling Crystal	1	SCR 142	Trainer
71 %20/28	Close Lillie's Determination	1–4	MEG 119	Trainer
68 %19/28	Close Meowth ex	1–2	POR 62	Pokémon
68 %19/28	Close Terapagos ex	1	SCR 128	Pokémon
64 %18/28	Close Energy Search	1–2	POR 72	Trainer
61 %17/28	Close Special Red Card	1	CRI 82	Trainer
57 %16/28	Close Mega Kangaskhan ex	1–3	MEG 104	Pokémon
54 %15/28	Close Iron Leaves ex	1	TEF 25	Pokémon
54 %15/28	Close Pikachu ex	1–2	SSP 57	Pokémon
54 %15/28	Close Switch	1	MEG 130	Trainer
54 %15/28	Metal Energy	1–2	MEE 8	Energy
50 %14/28	Close Buddy-Buddy Poffin	1–4	TEF 144	Trainer
43 %12/28	Close Chien-Pao	1	SSP 56	Pokémon
43 %12/28	Close Brock's Scouting	1	JTG 146	Trainer
39 %11/28	Close Bloodmoon Ursaluna ex	1	TWM 141	Pokémon
39 %11/28	Close Glass Trumpet	1–2	SCR 135	Trainer
39 %11/28	Close Judge	1	POR 76	Trainer
39 %11/28	Fire Energy	1–3	MEE 2	Energy
32 %9/28	Close Air Balloon	1–2	ASC 181	Trainer
32 %9/28	Close Cyrano	1–3	SSP 170	Trainer
21 %6/28	Fighting Energy	1–2	MEE 6	Energy
18 %5/28	Close Moltres	1	PFL 14	Pokémon
18 %5/28	Close Energy Retrieval	1	SVI 171	Trainer
18 %5/28	Close Unfair Stamp	1	TWM 165	Trainer
14 %4/28	Close Flareon ex	1	PRE 14	Pokémon
14 %4/28	Close Leafeon ex	1	PRE 6	Pokémon
14 %4/28	Close Raging Bolt ex	1	TEF 123	Pokémon
14 %4/28	Close Rare Candy	1–2	MEG 125	Trainer
11 %3/28	Close Munkidori	1–3	TWM 95	Pokémon
11 %3/28	Close Pikipek	2–3	PBL 66	Pokémon
11 %3/28	Close Eevee ex	2–3	PRE 75	Pokémon
11 %3/28	Close Toucannon	2	PBL 68	Pokémon
11 %3/28	Close Cornerstone Mask Ogerpon ex	1	TWM 112	Pokémon
11 %3/28	Close Trumbeak	1	PBL 67	Pokémon
11 %3/28	Close Light Ball	1	ASC 191	Trainer
11 %3/28	Darkness Energy	2–4	MEE 7	Energy
7 %2/28	Close Eevee	1–3	SSP 143	Pokémon
7 %2/28	Close Snorunt	1–2	ASC 46	Pokémon
7 %2/28	Close Sylveon ex	1–2	SSP 86	Pokémon
7 %2/28	Close Hoothoot	1	PRE 77	Pokémon
7 %2/28	Close Mega Froslass ex	1	ASC 47	Pokémon
7 %2/28	Close Dawn	1–3	PFL 87	Trainer
7 %2/28	Close Wally's Compassion	1–2	MEG 132	Trainer
7 %2/28	Close Black Belt's Training	1	JTG 143	Trainer
7 %2/28	Close Hilda	1	WHT 84	Trainer
7 %2/28	Close Lillie's Pearl	1	JTG 151	Trainer
7 %2/28	Close Redeemable Ticket	1	JTG 156	Trainer
7 %2/28	Close Prism Energy	1	ASC 216	Energy
4 %1/28	Close Drakloak	4	TWM 129	Pokémon
4 %1/28	Close Dreepy	4	TWM 128	Pokémon
4 %1/28	Close Staryu	3	POR 20	Pokémon
4 %1/28	Close Eevee	2	TWM 135	Pokémon
4 %1/28	Close Froslass	2	TWM 53	Pokémon
4 %1/28	Close Glaceon ex	2	PRE 26	Pokémon
4 %1/28	Close Mega Starmie ex	2	POR 21	Pokémon
4 %1/28	Close Chi-Yu	1	TWM 39	Pokémon
4 %1/28	Close Dragapult ex	1	TWM 130	Pokémon
4 %1/28	Close Eevee	1	SFA 50	Pokémon
4 %1/28	Close Flutter Mane	1	TEF 78	Pokémon
4 %1/28	Close Iron Crown ex	1	TEF 81	Pokémon
4 %1/28	Close Jolteon ex	1	PRE 30	Pokémon
4 %1/28	Close Paldean Tauros	1	SSP 18	Pokémon
4 %1/28	Close Passimian	1	SSP 111	Pokémon
4 %1/28	Close Pecharunt ex	1	SFA 39	Pokémon
4 %1/28	Close Psyduck	1	ASC 39	Pokémon
4 %1/28	Close Vaporeon ex	1	PRE 23	Pokémon
4 %1/28	Close Yveltal	1	MEG 88	Pokémon
4 %1/28	Close Team Rocket's Petrel	2	DRI 176	Trainer
4 %1/28	Close Team Rocket's Venture Bomb	2	DRI 179	Trainer
4 %1/28	Close Battle Cage	1	PFL 85	Trainer
4 %1/28	Close Energy Recycler	1	DRI 164	Trainer
4 %1/28	Close Hero's Cape	1	TEF 152	Trainer
4 %1/28	Close Jamming Tower	1	TWM 153	Trainer
4 %1/28	Close Kieran	1	TWM 154	Trainer
4 %1/28	Close N's Plan	1	BLK 83	Trainer
4 %1/28	Close Nighttime Mine	1	ASC 197	Trainer
4 %1/28	Close Prime Catcher	1	TEF 157	Trainer

The most common Wellspring Mask Ogerpon ex / Fan Rotom list, all 60 cards

Here they are in full, ready to build. 27 slots come from the core, the cards all 28 lists run. The remaining 33 come from the table just above, working down it: the cards the most players chose, each at its most common copy count, until the total lands on 60.

This list is nobody's list in particular. It takes, slot by slot, what the most people played, under the guardrails a judge would hold you to: never more than four copies of a card, and one ACE SPEC. Behind the core it took 24 more cards to reach 60. The whole thing comes to 22 Pokémon, 29 Trainers and 9 Energy.

One thing to know before you build it: the 28 lists we counted are all from players who came in the top twenty of their tournament. Nobody publishes the lists of the players who lost. So what you have in front of you is what the players finishing near the top bring most often.

The text under the table is the one the game expects: copy it, paste it into the deck manager, and the list builds itself.

There is no price total on this page. The readings we have are Cardmarket's, in euros, and the shop link further down sends you to TCGplayer, which quotes in dollars. Putting a euro figure next to a dollar shop would be one currency too many. The French and German pages carry the total.

Why we only read lists from players who came in the top twenty of their tournament, and what that changes about every percentage on this page: how to read a deck list.

Pokémon: 22
4 Hoothoot SCR 114
4 Noctowl SCR 115
2 Fan Rotom SCR 118
2 Wellspring Mask Ogerpon ex TWM 64
1 Lillie's Clefairy ex JTG 56
1 Fezandipiti ex ASC 142
1 Latias ex SSP 76
1 Teal Mask Ogerpon ex TWM 25
1 Meowth ex POR 62
1 Terapagos ex SCR 128
1 Mega Kangaskhan ex MEG 104
1 Iron Leaves ex TEF 25
1 Pikachu ex SSP 57
1 Chien-Pao SSP 56

Trainer: 29
4 Poké Pad POR 81
3 Area Zero Underdepths SCR 131
3 Crispin SCR 133
2 Boss's Orders MEG 114
2 Night Stretcher ASC 196
4 Ultra Ball MEG 131
2 Energy Switch MEG 115
2 Tera Orb SSP 189
1 Sparkling Crystal SCR 142
1 Lillie's Determination MEG 119
1 Energy Search POR 72
1 Special Red Card CRI 82
1 Switch MEG 130
1 Buddy-Buddy Poffin TEF 144
1 Brock's Scouting JTG 146

Energy: 9
1 Water Energy MEE 3
4 Grass Energy MEE 1
2 Psychic Energy MEE 5
1 Lightning Energy MEE 4
1 Metal Energy MEE 8

Total Cards: 60

What Wellspring Mask Ogerpon ex / Fan Rotom costs to build, and how long it will last

You need 97 different cards to cover every version of this deck, 10 of which nobody argues about. We do not have card prices, so we are not going to put a number on it.

All 28 lists bring an ACE SPEC, and that is where they part ways: 21 took Sparkling Crystal, 5 took Unfair Stamp and 1 took Hero's Cape. The flex table shows you all 4. You are allowed ONE ACE SPEC card in your whole deck, so a single copy covers it whatever it costs. New to this deck? Take Sparkling Crystal and watch what the others do with theirs before you switch.

Then there is time. 7 of the 10 core cards carry the letter H, the one that goes at the next rotation: Hoothoot, Noctowl, Fan Rotom and Wellspring Mask Ogerpon ex, plus 3 more. The core table marks every one of them. In copies, that is 20 of the 27 slots the core fills. Which day it lands, we do not know yet.

What Wellspring Mask Ogerpon ex / Fan Rotom struggles against

The attackers in this deck are Weak to Lightning, so they take DOUBLE damage from that type. 5 of the 97 decks we track attack in exactly that type.

Concretely, here is what is waiting for you: Mega Manectric ex / Eelektrik, Iono's Bellibolt ex and Joltik, plus 2 more decks. The table below takes them one at a time, and those are the lists you practise against first before an event.

This table counts one thing, Weakness, and that comes to 5 decks out of the 97 we track. The other 92 do not attack into yours, and this table says nothing about them. You will still run into them.

Going the other way, your attackers are Water, and 10 of the decks we track have an attacker Weak to one of those: Dragapult ex / Blaziken ex, Ethan's Typhlosion and Ceruledge ex, among others. That is you doubling, for once. Second half of the table.

Questions people ask

What is the Wellspring Mask Ogerpon ex / Fan Rotom deck list?

There isn't one, so we built one for you: all 60 cards are written out further up this page. Across 28 tournament lists harvested between 11 August 2026 and 28 August 2026, 10 cards turn up in every single one, 27 slots out of 60. The remaining 33 change from player to player, with 87 different cards competing for them. Both tables are above.

How many lists is this counted on, and where do they come from?

28 lists, played across 26 different tournaments, harvested between 11 August 2026 and 28 August 2026 from play.limitlesstcg.com. All 28 were read card by card, and every card recognised.

Where do I start if I want to build Wellspring Mask Ogerpon ex / Fan Rotom?

With the whole core: 10 cards, 27 slots. Inside it, buy the 14 Trainer slots and the 1 Energy first: they carry over into your next deck. Leave the 12 Pokémon slots for last. Only then work down the flex table and add the cards the most lists agree on, starting with Ultra Ball at 96 % and Lillie's Clefairy ex at 93 %.

What beats Wellspring Mask Ogerpon ex / Fan Rotom?

Its attackers are Weak to Lightning, so they take double damage from an attacker of that type. 5 of the 97 decks we track play an attacker of that type: Mega Manectric ex / Eelektrik, Iono's Bellibolt ex, Joltik and Raging Bolt ex / Iono's Bellibolt ex, among others.

Will Wellspring Mask Ogerpon ex / Fan Rotom survive the next rotation?

Not intact: 7 core cards out of 10 carry the letter H, starting with Hoothoot, Noctowl, Fan Rotom and Wellspring Mask Ogerpon ex, plus 3 more.

Are a lot of people playing Wellspring Mask Ogerpon ex / Fan Rotom?

We have read 28 lists of it, which puts it 53rd of the 97 decks we track by lists read. The platform those tournaments run on counts 73 entries for it, 0.18 % of the field, across all its players. That figure is theirs.

These pages are about the same corner of the game. If you came away from this one still wondering about something, start with one of them.