Majora's Mask

When Majora's Mask enters the battlefield, put a flying counter on it and attach it to target creature you control.

Equipped Creature has Flying and Shroud.

Remove a Flying Counter from Majora's Mask: It becomes a Demon Spirit with base power and toughness
6/6 and gains trample and vigilance. Activate only if it attacked this turn.

{b}{r}{g},{t}: Majora's Mask gains double strike and reach. Activate only if it's a Demon Spirit.