Chandra, World on Fire

+3: Chandra, World on Fire deals 1 damage to each player and each creature he or she controls, you gain life equal to half the damage dealt this way.
-4: When you cast your next instant or sorcery spell copy it twice, you may choose new targets for the copies.
-20: You get an Emblem with "red or white spells you cast place a scorch mark on target permanent, permanents with scorch marks are exiled.