Dossie, Drowsy Disentomber

As long as Dossie is tapped, it has ward {3} and Skeletons you control get +1/+1 and have deathtouch and vigilance.

Whenever a creature enters from your graveyard, create a
1/1 black Skeleton creature token.

{1}{w/b}, {t}: Exile target card from a graveyard, then create
X 1/1 black Skeleton creature tokens, where X is the mana value of the exiled card.

{0}: Tap Dossie, Drowsy Disentomber.