Thorin, Master Artificer

When Thorin, Master Artificer enters the battlefield, create X 0/0 colorless artifact creature tokens, then put X +1/+1 counters on each of them.
{t}{u}{r}, Sacrifice an artifact you control: put a number of Invention counters on Thorin, Master Artificer equal to the sacrificed artifact's converted mana cost. Then, if Thorin, Master Artificer has 10 or more Invention tokens on it, search your library for Thorin's Masterpiece and put it onto the battlefield tapped.