Ignite the Spark

The next time you would lose the game this turn, you become a planeswalker with 15 loyalty counters instead. You have "+2: Discard a card. If you do, deal 4 damage to target creature or player. -X: Play up to two cards from your hand with total converted mana cost X or less without paying their mana costs." (You are not a permanent, cannot be destroyed, and cannot cast spells.)