Zanquor, The Polywrath

First Strike, Vigilance, Flying, Indestructible
If this card puts a spell in a graveyard, then that
spell stays in the graveyard. Regardless of that
spell's abilities.
If this card puts a spell in a graveyard, then it
may Mutate with that spell. This card has to be
placed on top and under the control of its owner.
Then place a +2/+2 counter on this card.