S.H.I.E.L.D. Spy Kit

The clever part is the reward for attacking alone, which converts a modest +1/+1 into an engine as long as your board plan runs through a single threat. The untap step matters more than it reads: an equipped creature that swings solo comes back available on defense, so the gear quietly grants a vigilance-adjacent posture without printing the keyword. Stack the scry on top and you get card selection every turn the creature is willing to go in unassisted, filtering your draws while it stat-bumps and re-readies the same body. The alone-attack clause is what stops all of this from compounding into something a board full of blockers cannot punish. It also dictates the shell: a lone attacker with no evasion is exactly what a wide board wants to gang-block, so the equipment is worst in swarm decks and best in voltron builds where one recurring threat carries the game and picks its spots to attack unopposed. At one mana to cast with a cheap equip, it slots into any white deck that wants a repeatable filtering outlet stapled to a permanent, and unlike a creature-based engine it survives a sweeper and re-attaches to whatever is left. Three jobs on a one-mana artifact (a buff, pseudo-vigilance, and card filtering), with the single-attacker requirement the tax you pay to keep all three online at once.