Dante, the Mastermind

Haste.
When Dante, The Mastermind enters the
battlefield, you may pay {10}. If you do,
discard your hand and the first 10 cards of your
Library. Then you may draw a card.
If you're winning the game, you lose 10 life.
If you're losing the game, you gain 1 life.
"Pucha oh, perdon"