Shriekmaw

Oracle Text

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

When Shriekmaw enters the battlefield, destroy target nonartifact, nonblack creature.

Evoke 1B (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Card Rulings

4/15/2013 If you cast this card for its evoke cost, you may put the sacrifice trigger and the regular enters-the-battlefield trigger on the stack in either order. The one put on the stack last will resolve first.