It That Reaps

Impending 7—{u}{b}{r} (If you cast this spell for its impending cost, it enters with seven time counters on
it and isn't a creature until the last is removed. At
the beginning of your end step, remove a time counter
from it.)

Whenever you cast an instant or sorcery spell, each
player mills X, where X is that spell's mana value.
If It That Reaps is a creature, put a +1/+1 counter
on it. Otherwise, remove a time counter from it.