This Is just a question that was in my mind when doing Tera raids and just wanted to know if Pokémon do have an increased chance of being shiny in Tera raids?
Unfortunately, the odds of finding a Shiny Pokemon during Tera Raid battles will always stay at 1/4,096. This is because the shiny odds within raids are not affected by the bonuses from a Shiny Charm or Shiny Sandwiches.
Source
Tera Raids are always a 1/4096 chance, even if you have Shiny Charm and/or Sandwich boost powers.
