To learn more about Mega Swampert's type matchups, check out our Pokemon Type Calculator. There is a 1-in-128 or 0.78125% chance that you will encounter a Shiny Swampert from these raid battles.

With the right team and strategy, you can defeat Mega Swampert and catch a high-IV or Shiny Swampert during the event! Also read: Pokemon GO Festival of Colors preparation guide: Event details ...