Treyza, Dreamwalker

+2: For each opponent, create a Fardream enchantment aura token enchanting that player. It has, "Whenever you cast a spell, lose 1 life."
-3: For each aura you control, create a token copy of it, except it's not legendary. You choose new targets for the copies.
-13: Each opponent loses 13 life for each aura you control. Treyza, Dreamwalker can be your Commander.