Cosmical Blacksmith

When Cosmical Blacksmith enters the battlefield create x 3/3 color less artifact token creatures.
When Cosmical Blacksmith leaves the battlefield, destroy all artifacts an opponent controls.
{x}{x}{w/b}{u/r}: Search your library for an artifact with converted mana cost x or less.
As long as Cosmical Blacksmith is on the battlefield, all equipment's cost 2 less to attach.