Loki

{1}{u}{b}: Create a 0/1 blue and black Loki Illusion token that has, "Whenever this creature becomes the target of a spell or ability, sacrifice it."

Whenever an opponent casts a spell targeting Loki, you may pay {2}. If you do, change the target to another creature you control.

When Loki dies, you may return him to your hand, unless your opponent pays 3 life.