匿蹤屠龍者

Text:

繫命
威力變身（你可牌面朝下地施放此牌並支付，將其當成2/2生物。可隨時支付其威力變身費用使其翻回正面，並在其上放置一個+1/+1指示物。）
當匿蹤屠龍者翻回正面時，消滅目標由對手操控且力量等於或大於4的生物。

Rulings:

• 2/25/2015 Turning a face-down creature with megamorph face up and putting a +1/+1 counter on it is a special action. It doesn’t use the stack and can’t be responded to.
• 2/25/2015 If a face-down creature with megamorph is turned face up some other way (for example, if you manifest a card with megamorph and then pay its mana cost to turn it face up), you won’t put a +1/+1 counter on it.
• 2/25/2015 Megamorph is a variant of the morph ability. You can find more information on morph on cards with morph from the Khans of Tarkir set.