Dora Milaje Elite

The catch-up clause here is doing quiet, unusual work: the Vibranium token only appears when an opponent has more lands than you, and it arrives tapped, so it never smooths your curve on the turn you deploy this. It's a mana rebate for the player losing the board-development race, not a ramp piece, and the mana it makes is deliberately hobbled: colorless, and unable to cast nonartifact spells. That leaves the token useful for artifact spells, activated abilities, and paying taxes or ward costs, but not for advancing a normal spell-based game plan, which is the price for handing free mana to whoever fell behind. The more strategically interesting half is the sacrifice ability, which converts a 2/2 first striker into a one-shot insurance policy for your legendary permanents. That's a response to a sweeper or a targeted kill spell that costs you nothing but a small body you've likely already gotten value from. The two abilities point in opposite directions (one rewards falling behind on lands, the other protects the things that keep you ahead), which makes this less a synergy engine than a pair of independent hedges bolted to a cheap warrior: something to do when you're losing the land race, something to do when your key permanent is under threat.