Delta Stream(JP) is a Pokémon ability introduced in the sixth generation.


When the ability holder enters battle, "strong winds" are created. Strong winds remain active as long as the ability holder is in battle. Moves that would normally be super effective against flying type Pokémon (specifically rock, electric, and ice type moves) do normal damage instead. Delta Stream's strong winds cannot be replaced by any weather condition, but can be bypassed via Cloud Nine or Air Lock.

Pokémon with the Ability

Mega Rayquaza


  • One of the abilities that is able to bypass the effects of Delta Stream, Air Lock, is ironically the signature ability of standard Rayquaza.
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