Saheeli Aether Artificer

+2: Create a 1/1 colorless Thopter artifact creature token
-X: Search your library for an artifact card with converted mana cost X or less and put it on to the battlefield. Then shuffle your library.
-7: You get an emblem with "At the beginning of your upkeep create a token that's a copy of target artifact, except the token isn't legendary."