Otherworld Guardian

When Otherworld Guardian enters the
battlefield, if a permanent you control would be
put into a graveyard from the battlefield this
turn, exile it instead. Return it to the battlefield
under its owner's control at the beginning of
the next end step.
{w}{w}{w}: Put Otherworld Guardian onto the
battlefield from your hand. Activate this ability
only if an opponent's spell or ability targeted a
Fox, Spirit, or enchantment permanent
you control.