Nahiri, Chaos Forger

+1: You may discard a card. If you do, draw a card. If you don't, Nahiri deals 1 damage to target player.
-2: Deals 2 damage divided as you choose to up to two targets creature and/or planeswalker. Creatures dealt damage this way can't block this turn.
-X: Cast a card from your hand with X cost without paying its mana cost. Any opponent may have Nahiri deals X damage to them to counter this ability