Excavation Sentinel

When Excavation Sentinel leaves your graveyard, create a 3/2 red and white Spirit creature token.
Unearth {3}{r}{r} ({3}{r}{r}: Return this card
from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end
step or if it would leave the battlefield. Unearth
only as a sorcery.)