Oracle Text

Players may cast enchantment spells as though they had flash.

Whenever you roll H, destroy target creature that isn't enchanted.

Card Rulings

6/1/2012 A creature that’s enchanted can’t be chosen as the target of the chaos ability.
6/1/2012 If a creature that isn’t enchanted is targeted by the chaos ability, but that creature is enchanted when that ability tries to resolve, the ability won’t resolve for having an illegal target.