Possible counter to Chaze: Inflicts healing immunity as long as Darth Sidious is alive

With the current meta, healing immunity is cleansed almost as soon as it's applied.

There needs to be a good counter to chaze and their infinite heals other than Boba Fett or Zader. Shock is cleansed by Chirrut or Kenobi or Rex lightning fast. So is healing immunity. It makes battles painfully long whether you win or lose.

How about healing immunity that can't be cleansed as long as a character is alive? It could be Sidious or some new character.