Artifact Master

Artifice 3: {w/b}{w/u}(If this creature doesn't
have a artifice counter on it, search your library for a equipment with converted mana cost 3 or less and put
it onto the battlefield equipped to this creature. The put
an artifice counter on it.)
As long as Artifact Master has an artifice counter
on it, you can't activate artifice abilities of other creatures you control.
He definitely knows his weapons.