Ho-Oh-EX (Dragons Exalted 119/124)
Ability Rebirth

Once during your turn (before your attack), if this Pokémon is in your discard pile, you may flip a coin. If heads, put this Pokémon onto your Bench and attach 3 different types of basic Energy cards from your discard pile to this Pokémon.

Colorless Colorless Colorless
Rainbow Burn

Does 20 more damage for each different type of basic Energy attached to this Pokémon.

Card rule

When a Pokémon-EX has been Knocked Out, your opponent takes 2 Prize cards.