Etheral Protector

{w}{w}{p/w} This card becomes a 5/5 with haste, flying and "whenever this card deals damage to a player, instead damaged player discards cards from the top of their library equal to the damage." until end of turn.
If this card would be destroyed instead exile it with 3 time counters, at the beginning o your upkeep remove a counter, when there are no more time counters on this card, target opponent gains control of it.