Gwen, Violent Heliomancer

+1: Target creature gets +1/+0 and gains first strike and menace until end of turn. You may have it fight target creature you don't control.
-2: Destroy target artifact or tapped creature.
-7: You get an emblem with, "Your opponents can't untap more than 1 creature during his or her untap phase." Then, tap all creatures.