Skrogg, the Fumeborne

Flying

When Skrogg attacks, you may discard a card. If
you do, draw a card and put a fume counter on
Skrogg. Until end of turn, when Skrogg deals
combat damage to a player, if it has three or more
fume counters on it, you may cast the discarded
card without paying its cost.

Madness {1}{b}{r}