Hakari, Genius Gambler

Flying
Idle Death Gamble - Whenever Hakari attacks,
choose a number between 1 and 5. Flip that many
coins. For each flip you win, draw a card.
For each flip you lose, Hakari deals
2 damage to you.
Jackpot - If you won five flips this way,
you may cast spells from your hand this turn
without paying their mana costs