John F. Kennedy

+2: Put a +1 +1 counter on one of your creatures, you gain 3 life.
-3: Create two 1/2 nuke creature with flying and, when you collect 20 of these you win the game.
-15: JFK is assasinated, sacrifice this Planeswalker, deal 10 damage to target creature or player and create 5 copies of a creature you control.