Adult White Dragon

Flying, Daunt 2 (This creature can't be blocked by
creatures with power 2 or less)

Breath Weapon {1}{w}{w} — Tap target creature an opponent controls. That creature doesn't untaap durings its controller's next untap step.(When this creature enters the battlefield, Breath Weapon activates. When it attacks, you may spend its cost to activate it. You may only activate this once per turn.)