Loyal Inventor

An artifact tutor whose payload is gated behind a creature type it does not itself belong to. The enters trigger fetches any artifact, but where that card lands depends on a board-state check: with an Assassin under your control, the artifact goes straight to hand like a Demonic Tutor for the archetype; without one, it downshifts to a Sylvan Tutor variant that only stacks the card on top of your library. That conditional is the whole balancing act. A one-shot tutor that put any artifact directly into hand on a vigilant 2/3 body would be priced far too aggressively even as an enters-the-battlefield effect; leashing the full payload to Assassin control is what keeps the rate defensible, so the card reads as premium in a deck built around that tribe and merely serviceable everywhere else. The vigilance is a quiet tell about intent: the body is meant to fetch and then keep attacking or blocking, not idle as a value piece. The interesting move is how cleanly the design splits its own power along a tribal axis without splitting into two abilities; it is one trigger whose quality scales on a single yes-or-no question about your board. Cards that gate a top-tier effect behind a creature-type requirement are usually payoffs in name only, glue that assumes you have already committed to the theme. This one doubles as its own fixing, digging for the artifact that fuels the deck while rewarding the tribe that carries it.