Wall of Frost
Creature — Wall
Defender
Whenever Wall of Frost blocks a creature, that creature doesn't untap during its controller's next untap step.
"I have seen countless petty warmongers gaze on it for a time before turning away." —Sarlena, paladin of the Northern Verge
0/7
Illustrated by
Magic 2015#83UncommonEnglishLegality
Rulings
Jul 18, 2014
Wall of Frost’s ability tracks the creature, not the creature’s controller. That is, if the creature changes controllers before its first controller’s next untap step, then it won’t untap during its new controller’s next untap step.
Jul 18, 2014
If the creature isn’t tapped during its controller’s next untap step (perhaps because it was untapped by a spell), Wall of Frost’s ability has no effect at that time. It won’t try to keep the creature tapped on subsequent turns.