Form of the Dragon | Magic: The Gathering
Formats Form of the Dragon is Legal in
Official Oracle Text for Form of the Dragon
At the beginning of each end step, your life total becomes 5.
Creatures without flying can't attack you.
Official Rulings for Form of the Dragon
10/4/2004 : It sets your life total at the beginning of the end step of every player's turn, not just your own.
2/1/2014 : Unless some effect explicitly says otherwise, a creature that can't attack you can still attack a planeswalker you control.