If a Zombie is on the battlefield, Skeletons you control get +2/+1 and have deathtouch and Devils you control get +0/+2 and have intimidate and deathtouch until end of turn. Otherwise, discard 3 cards.
Harrowing Evil {1BB} |Instant| If a Zombie is on the battlefield, Skeletons you control get +2/+1 and have deathtouch and Devils you control get +0/+2 and have intimidate and deathtouch until end of turn. Otherwise, discard 3 cards.