Gilded Scuttler

Two jobs that usually demand separate cards ride the same evasive body: permanent unblockable connection and a tempo tax that lands the instant the crab resolves. That arrival trigger fires independent of combat, tapping an opponent's creature and pinning it with a stun counter, so whatever you target sits out its next untap step and misses a full turn without ever dying. It is soft removal dressed as a value effect. Because the disruption keys off entering the battlefield rather than being cast, it is portable: blink or reanimation buys a second tap-and-stun off the same body every time it returns. The catch runs the other way too, since a creature that never resolves never enters, so a counterspell aimed at the crab erases the stun along with it. Where the disruption is a one-time arrival, the unblockable clause is the ongoing promise: the body threatens nobody in a fight but cannot be kept from connecting, so it keeps chipping in a point at a time long after the tax has done its work. Trading combat relevance for a guaranteed, unconditional stun is the whole bargain: no attack requirement, no survival requirement, just a permanent that arrives, taxes, and then nibbles. The artifact type is a quiet bonus, opening lines a plain blue creature would not have. Workmanlike rather than a bomb, but a clean packaging of a role that usually forces a choice between the evasive attacker and the disruptive spell.