Suriel, Twisted Soul

Flying
Whenever Suriel, Twisted Soul attacks, hinder 1. (Choose a creature with the greatest toughness from among creatures you don't control and put a -1/-1 counters on it.)
Each creature you don't control with a -1/-1 counter on it doesn't untap during its controller's untap step and has "{2}, {ut}: Target opponent may hinder 1."