Synch 7 (Sacrifice two or more creatures you control whose combined total converted mana cost is 7 as you cast this card. If you do, Kuibelt the Blade Dragon costs {1}{B}{B} less to cast.)

Flying

When Kuibelt the Blade Dragon enters the battlefield, destroy target nonland permanent.

When Kuibelt the Blade Dragon leaves the battlefield, tap target creature an opponent controls and put a stun counter on it.