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.
Attack 2:
[2D] Black Fang (30+)
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.