Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
Hi I saw a post on this already but staff seemed to get it wrong, Mirror herb DOES work on Dondozo + Tatsugiri
This was also turn 1
BUG STATUS: FIXED at some point
Won vs Giga-Chandelure 2-1 GGs!
https://replay.pokemonshowdown.com/gen8randomdoublesbattle-1636410388
https://replay.pokemonshowdown.com/gen8randomdoublesbattle-1636412277
https://replay.pokemonshowdown.com/gen8randomdoublesbattle-1636414463
Won vs neycwang 2-0
https://replay.pokemonshowdown.com/gen8randomdoublesbattle-1632523867https://replay.pokemonshowdown.com/gen8randomdoublesbattle-1632527623