Mohu, First and Last Outcast

When Mohu, the First Outcast enters
the battlefield, create an Enchantment - Aura
Mask token and attatch it to Mohu.
1{u}{r} Create a Mask token and attatch it to
another target creature you control.
At the beginning of your end step, if
Mohu has no auras attatched to him,
create a Mask token and attatch it to Mohu.