Houndoom - 8/64 - Holo Rare - Unlimited

Discard 1 Fire Energy card attached to Houndoom or this attack does nothing. If there are any Darkness Energy cards in your discard pile, attach 1 of them to Houndoom.

Flip a number of coins equal to the number of Darkness Energy attached to Houndoom. This attack does 30 damage plus 10 more damage for each heads.

-30