When this creature enters, you get {E}{E}{E}. Pay {E}: This creature gains your choice of flying, vigilance, or lifelink until end of turn. Pay {E}: This creature gets +2/-2 or -2/+2 until end of turn.
At the beginning of your upkeep, if you control three or more artifacts, you gain 1 life. {T}: Add {C}. {4}, {T}, Sacrifice Inventors' Fair: Search your library for an artifact card, reveal it, put it into your hand, then shuffle. Activate only if you control three or more artifacts.