Fire-type Legendary beast Entei (left) makes a return this weekend in raid battles, with its Water-type mate Suicune to join soon.
Augmented reality monster catching game Pokémon Go is introducing a slew of updates to its battle system with new attacks and some changes to battle mechanics.
"In a continued effort to make Trainer Battles a fun and competitive experience, switching Pokémon will now briefly pause the battle," says game maker Niantic, on its blog.