Kallavan, Herald of Chaos

+1: When you cast your next instant or sorcery spell this turn, flip a coin. If you win the flip, copy that spell. If you lose the flip, counter it.
-3: Flip a coin until you lose a flip. Kallavan deals twice X damage to target creature, where X is the number of flips you won.
-8: You gain an emblem with "Whenever you cast an Instant or Sorcery spell, copy it. You may choose new targets for the copy."