Kiuname, the Trickster

0: Kiuname deals 1 damage to any target. Proliferate.
-3: Choose a player. That player creates a 5/5 green elemental creature token, then Kiuname deals 4 damage to each creature that player controls.
-10: Each opponent creates an emblem with "whenever you draw a card or cast a spell, this emblem deals 2 damage to you."