Memoricide

Flying When this creature enters, destroy all tapped creatures.

Flying 2: This creature gets +1/+0 until end of turn. X: Destroy each nonland permanent with mana value X whose controller was dealt combat damage by this creature this turn. Activate only once each turn.

Deathtouch, lifelink When this creature dies, create a 3/3 colorless Phyrexian Wurm artifact creature token with deathtouch and a 3/3 colorless Phyrexian Wurm artifact creature token with lifelink.