Witchstalker
Creature — Wolf
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
Whenever an opponent casts a blue or black spell during your turn, put a +1/+1 counter on Witchstalker.
3/3
Illustrated by
Magic 2014#202RareEnglishLegality
Rulings
Jul 1, 2013
The counter will be put on Witchstalker before the spell cast by an opponent resolves.
Jul 1, 2013
If an opponent casts a copy of a card that’s blue or black during your turn (as opposed to putting a copy of such a spell directly on the stack), the ability will also trigger. Check for the word “cast” in the effect that creates the copy.