ShadowMan, Harbinger of Doom

Mutate {10}{b/g}{u}{r} (If you cast this spell for its mutate
cost, put it over or under target non Human creature
you own. They mutate into the creature on top plus all abilities from under it.)
Flying, Protection from non permanent spells
(spells that will resolve when state based actions are checked)
Whenever this creature mutates, creatures you
control get Haste and Deathtouch until
end of turn.