Mor'phann: Freezing Mists

Mor'phann Tidecasters can summon freezing
ethereal mists that slow the movement of their
foes.
If successfully cast, pick an enemy unit within
12" of the caster that is visible to them.
Until your next Hero Phase, that unit can only
move 1" when it piles in, and any abilities that
would increase its pile in move are ignored.