Halcyon, Keeper of Lords

+2: Target player reveals their hand. You choose a non-land permanent from it, and that player exiles that card. You lose 3 life.
0: You may cast a card exiled with Halcyon, Keeper of Lords abilities until end of turn. You may cast it using any type of mana to cast it.
-12: Exile all non-land permanents on the battlefield excluding Halcyon, Keeper of Lords. You gain 2 life for each card exiled this way.