Esper Shadowmage

As long as Esper Shadowmage is equipped, it gets
+2/+0 and has first strike.
Artifice 3: {5}{b}. ({5}{b}: Search your library for an
Equipment with converted mana cost 3 or less and put
it onto the battlefield equipped to this creature. Then
put an artifice counter on this creature. Activate this
ability only if this creature doesn't have an artifice
counter on it.)
His blades never slice clean air.