London_Gaymer, Clutch Lord

Prowess (Whenever you cast a non-creature spell,
this creature gets +1/+1 until end of turn)
Whenever you cast a non-creature spell you may
pay {u}. If you do, choose one:
•Target creature gets -1/-1 until end of turn.
•Tap or untap target creature
Behind that stare is a dozen plots, a hundred thoughts,
and a thousand endings you don't want.