Delta Stream is an ability introduced in Generation VI as part of Pokémon Omega Ruby & Alpha Sapphire. It is exclusive to Mega Rayquaza.
Effect
It brings strong winds to the battle. The weather lasts while the Pokémon remains in battle. Other effects include preventing other weathers from being triggered, either by ability or moves and cause super effective damage on Flying-type Pokémon to become neutral or less effective, such as an Ice Beam on a Dragon/Flying-type Pokémon.
Pokémon
| Pokédex | Pokémon | Sprite | Type |
|---|---|---|---|
| #385 | Rayquaza |  
|