Rúndolwen, Pact-Sworn

+2: Rúndolwen, Pact-Sworn deals 3 damage to target creature. If a creature is killed this way, put a loyalty counter on Rúndolwen, Pact-Sworn.
+1: Untap target creature you control. It gains either double-strike, lifelink, or vigilance until end of turn.
-15: Put a Pact counter on all creatures target opponent controls. They gain "when this creature dies, its controller loses life equal to its power."