Viridian Claw

Two mana to cast, one to equip, and what it buys is first strike: the cheapest reliable way in the artifact-equipment line to bolt a decisive combat keyword onto any body. The +1/+0 is almost incidental; the real work is the keyword, which turns an attacker into something that wins the combat math it should lose and a blocker into a wall that kills before it dies. First strike on a creature with even a slim power edge flips the entire damage exchange. Equipment that grants an evergreen combat keyword rather than a raw stat boost tends to age well, because the keyword scales with whatever it lands on: a small token becomes a credible attacker, a fat midrange threat becomes one that no longer trades down. The colorless cost matters just as much, slotting into any deck that wants its creatures fighting above their weight without a green or white commitment. It is unglamorous by design: a repeatable combat ability with none of the protection, evasion, or card advantage that flashier equipment piles on. The restraint is the point. It does one thing, does it for a low cost, and the equip ability is cheap enough that moving the Claw from one creature to the next between turns barely registers on the mana you spend, which is what keeps it relevant long after the bigger swords have rotated out of a given board state.