Ardansk Dragonsmith

As Ardansk Dragonsmith enters the battlefield, return all opponents' artifacts to their owner's hand and place up to {x} amount of 1/1 Colorless Construct onto the battlefield.
At the start of your next upkeep. If an Artifact Creature under your control dealt combat damage last turn, you can put a +1/1 counter onto any Artifact Creature that you control.