This card is definitely... interesting. If you can flash it out when you're about to be killed, it could save you (especially if your opponent only swings with enough to bring you to 0 life). It can also be fun to Donate to someone else in order to instantly remove a player from the game. Other than that, it's... decent. It costs triple white, so it can be pretty difficult to put into a multicolour deck.
Pros: Can be donated to remove a player form the game, safety net
Cons: Can easily kill you, triple white