Overhaul, eternal torturer

Trample, double strike
Mutate{4}{b}(if you cast this spell for its
Mutate cost, put it Iver or under target
non-human creature you own. They Mutate
into the creature on top plus all abilities from it.)
Overhaul-pay{3} sacrifice a creature, overhaul gets
+X/+X equal to sacrificed
creatures power and toughness, if mutated under a creature it gains this ability.