Ghostwood Grizzly

Etherialize {4}{u} ({4}{u}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 1/1 blue Bear Spirit with no mana cost. Etherialize only as a sorcery.)
As long as Ghostwood Grizzly is a token, it gets +1/+1 and has "Whenever Ghostwood Grizzly becomes the target of a spell, sacrifice it.".