Bulwark Crawler

If Bulwark Crawler or another non-token creature you control enters from any zone
other than your hand, put a 1/1 Construct artifact creature token into play.
Unearth {1}{b} ({1}{b}: 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.)