How can you tell your card is this one?

Look at the bottom of your card: you should read AQ 144/147 there. Its illustration is signed Takumi Akabane.

Which set does it come from?

It comes from the Aquapolis set, released here on 15 January 2003.

Rainbow Energy AQ 144/147: price and value

Versions of this card

Check the number and illustration against the card you are looking for.

What you might be wondering about this card

How can you tell your card is this one?: Look at the bottom of your card: you should read AQ 144/147 there. Its illustration is signed Takumi Akabane.
Which set does it come from?: It comes from the Aquapolis set, released here on 15 January 2003.

When it came out

Aquapolis landed here on 15 January 2003.

Every set, with both of its dates

What the card itself says

Its characteristics and effects in play, with the original text when available.

Number: 144/147
Set: AquapolisAQ
Illustrated by: Takumi Akabane

Attach Rainbow Energy to 1 of your Pokémon. While in play, Rainbow Energy provides every type of Energy but provides only 1 Energy at a time. (Doesn't count as a basic Energy card when not in play.) When you attach this card from your hand to 1 of your Pokémon, put 1 damage counter on that Pokémon.このカードを手札からポケモンにつけたとき、そのポケモンにダメカンを1個のせる。このカードは、ポケモンについているかぎり、すべてのタイプのエネルギー1個ぶんとしてはたらく。ポケモンについていないなら、[無]エネルギー1個ぶんとしてはたらく。

What to make of it

Have a look at what it does well, then at what will get in your way. After that you'll know whether it belongs in your deck.

A strength
No Weakness printed on the card. Nothing doubles up the damage it takes.
Keep in mind
None of the 5,392 tournament lists we have read runs it. That does not make it a bad card — it means we have not seen it on a table yet.

Who plays it

None of the tournament lists we have read mentions this card. That happens with a card that has just come out, or one players have not tried yet.