Ability₁₀₆-Illuminate

💥In Battle💥
🟢Gen³⁻⁸ Illuminate has no effect during battle.
🔴Gen⁹ Starting in Version 2.0.1 of Pokémon Scarlet and Violet, Illuminate prevents other Pokémon from lowering the accuracy stat stage of the Pokémon with this Ability, and also ignores the target's evasion stages.
⚠️Effects that decrease accuracy without using stat stages, such as Wonder Skin and Sand Veil, are unaffected by Illuminate.
⚠️This Ability can be ignored with Mold Breaker.
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📑Prior to version 2.0.1 of Pokémon Scarlet and Violet, Illuminate had no effect in battle, even after its text update in version 1.3.2. However, this inconsistency could not be seen in-game as no Pokémon with Illuminate had been available in Scarlet and Violet at the time.
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🛤️Outside Of Battle🛤️
🟢Gen³
If a Pokémon with Illuminate is in the first place in the party (even if fainted), the wild Pokémon encounter rate increases by 100%.
⚠️It shares this trait with Arena Trap and No Guard.
⚠️Illuminate does not affect the Rock Smash encounter rate.
🔵Gen⁴⁻⁷
Illuminate now increases the Rock Smash encounter rate in Pokémon HeartGold and SoulSilver.
🔴Gen⁸
In Pokémon Sword and Shield, this Ability only affects the rate at which random encounters happen.
🟡Gen⁹
Illuminate appears to have no effect on the encounter rate of wild Pokémon.
~Bulbapedia