Sea Guardian
Ups highest stat by +1 on entry when it rains.
6 species 4 as main 2 as innate 6 battle AI weight, −2 to 10 — 6 is the untouched default
In detail
When entering battle during rain, Sea Guardian boosts your highest stat by one stage. Works with any rain type. Triggers once per switch-in.
Types that carry it
6 species Water 6 Dragon 1 Flying 1
As a main ability
4 speciesSelectable — one of up to three, and only one is active.
As an innate
2 speciesAlways on, alongside whichever main ability is chosen.