Thought, the Cacophonous

+1: Choose one: draw a card, gain 1 life, deal 1 damage to target creature, target opponent loses 1 life, or put a +1/+1 counter on target creature.
0: Until the end of your next turn, all players play with their hands and the top card of their library revealed.
-1: You phase out. Until the end of your next turn, target opponent may cast spells from their hand without paying their mana costs.