Two mana for -2/-2 is a price the format will pay, but only because the kicked rate solves a problem TMT actually creates. The legendary uncommons and mythic Turtle finishers sit at four and five toughness, often with trample or menace, and the common removal suite is thin enough that any deck reaching turn six against a resolved Shredder, Unrelenting needs a real answer. -5/-5 is that answer, and it lands at instant speed on the swing. Grounded for Life wants the creature tapped first; Dimensional Exile costs an enchantment slot and announces itself a turn early.
BG Food wants it most and should take it P1P3 to P1P5. Anchovy & Banana Pizza and Omni-Cheese Pizza both produce sacrificial fodder that converts the floor upward at no real cost, and the deck is already building the artifact density to make the kicker close to free. WB legendaries values it on a similar band, with a cleaner wrinkle: sacrificing a legendary creature you have already extracted value from is the most efficient version of this trade. The two black archetypes compete for it from opposite directions, one feeding the kicker with disposable tokens, the other with bodies that have outlived their purpose.
The floor is the discipline. In a format where a 2/3 for three is the common baseline, paying two for -2/-2 without the kicker is a losing exchange against anything but the smallest aggressive curves. That weak floor is exactly why the kicked rate is fair, and why this is a maindeck removal spell the moment you are in black, never a card the rest of the table reaches for.
