Braden, Dungeon Master

Flying, Indestructible
When Braden, Dungeon Master enters the battlefield, all other players roll perception, anyone who rolls under 10, takes 10 damage.
Reroll{1}{u}: Scry 2, draw one card.
Short rest{1}{w}: Gain 5 life
Long rest{3}{w}{w}: Gain 10 life, draw 2 cards, untap target creature.
"DM Powers"{0}: If you have more than 0 cards in your hand, you win the game.
"Problem?"