Cobalt, Dracomechanist

Ward {3}
Whenever a non-token artifact you control leaves the battlefield, create your choice of either a tapped treasure, clue, or food token.
Sacrifice a treasure, a clue, and a food token: Create
a token that's a copy of a dragon creature you control, except it is non-legendary and is an artifact in addition to its other types. Activate this ability only once each turn and only as a sorcery.

Artifact creatures you control have Ward {1}.