You may cast Ward of Lights as though it had
flash (You may cast this spell any time you could cast an instant.). If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.
Enchant creature
(Target a(n) creature as you cast this. This card enters the battlefield attached to that creature.)
As Ward of Lights enters the battlefield, choose a color.
Enchanted creature has
protection from the chosen color
(A permanent or player with protection can't be targeted, enchanted, equipped, fortified, damaged or blocked by sources of the given property.). This effect doesn't remove Ward of Lights.