Icepeak Predator

Reach, Trample
Whenever Icepeak Predator deals combat damage
to a player, put an ice counter on each creature
that player controls.
When the third ice counter is put on a creature,
you gain control of it. That creature can't
attack or block, and it's activated abilities can't
be activated. It is a food in addition to its other
creature types and has "{2}, Sacrifice this
creature: You gain 3 life".