Dumat, Mechanical Uniter

+1: Put a 1/1 colorless Construct artifact creature token with assembly 1 and "equipped creature gets +1/+1" onto the battlefield.
-2: Search your library for an artifact card with assembly and put it into your hand, then shuffle your library.
-6: You get an emblem with "Whenever you activate assembly, put a token onto the battlefield that is a copy of that creature."