Entangling Trap

Oracle Text

Whenever you clash, tap target creature an opponent controls. If you won, that creature doesn't untap during its controller's next untap step. (This ability triggers after the clash ends.)

Card Rulings

9/20/2013 If you clash because of a spell or ability an opponent controls, the ability will still trigger. Likewise, you can still win the clash even if you weren’t the player to initiate it.