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i would put it under Tactical Rock–Paper–Scissors
Seems a bit too vague. This is about the designers specifically countering a game breaker not by straight nerfing it but introducing a cripplingly specific asset that nearly turns the game-breaker into a joke.
Of course Tropes Are Flexible and maybe I'm just being too picky.
Edited by sohibil Humankind is like a train. No matter how powerful the locomotive is, it can only travel as fast as its slowest car allows it to.
This is a similar situation to StarCraft where mutalisk stacking (condensing a large number of a weak-but-numerous flying unit into a small space) was a dominating strategy, and the expansion added Valkyries and Corsairs, air-to-air units with splash damage that would do enormous amounts of damage per shot to a packed group. This is listed as Obvious Rule Patch for the Valkyrie on the Characters.Starcraft Terrans page.
Lookslike I should settle for that if nothing more fitting comes by.
Humankind is like a train. No matter how powerful the locomotive is, it can only travel as fast as its slowest car allows it to.
Highly Specific Counterplay for the form where it's very specific in what it negates
Tactical Rock–Paper–Scissors would apply to more general counters introduced with the intention of balancing out a more general metagame threat. Back when I was really into Magic the Gathering this sort of thing was known as a Hoser- for instance in a set where they knew they were going to strongly favor red-based decks, they might also include Hosers in the set like a cheap-to-play card that destroys a red permanent or a creature that gets stronger every time the opponent plays a red card.
Edited by Scorpion451
A specific kind of Nerf. A new character/unit/item is introduced in an expansion/update that makes short work of an outstandingly strong asset, sometimes even rendering the former Game-Breaker practically useless.
An example would be the GDI Slingshot unit in Command & Conquer: Tiberium Wars expansion Kane's Wrath. This anti-air unit renders the formerly formiddable Scrin Planetary Assault Carrier far less useful. While in the base game the ship was nearly enough to curb-stomp any non-Scrin faction to dust, the new hover AA gun stops entire fleets dead in their tracks.
This is probably YMMV.