Unctus, Grand Metatect

Other blue creatures you control have "Whenever
this creature becomes tapped, draw a card, then
discard a card."

Other artifact creatures you control get +1/+1.

{p/u}: Until end of turn, target creature you control becomes a blue artifact in addition to its other colors
and types. Activate only as a sorcery. ( {p/u} can be
paid with either {u} or 2 life.)