If Fire Pledge and Water Pledge are used in the same turn, the ally moving second will use Water Pledge with a power of 150, and [b]create a rainbow [/b]on the user's side of the field for four turns. The rainbow doubles the probability of secondary effects taking place on that side of the field; this effect does not stack with Serene Grace.
If Fire Pledge and Grass Pledge are used in the same turn, the ally moving second will use Fire Pledge with a power of 150, and [b]create a sea of fire[/b] on the target's side of the field for four turns. The sea of fire damages all non-Fire-type Pokémon on that side of the field for 1/8 of their maximum HP at the end of each turn.
If Grass Pledge and Water Pledge are used in the same turn, the ally moving second will use Grass Pledge with a power of 150, and [b]create a swamp [/b]on the target's side of the field for four turns. This swamp quarters the Speed of all Pokémon on that side of the field.