Darkness -5% accuracy (Deep Forest)
Fog -5% accuracy (Swamp)
Fog & Slow -5% acc, enemy first (Swamp Depths)
Curse -10% ATK & DEF (Haunted Village)
Darkness & Curse -10% acc + curse (Cemetery, Manor)
Rain -10% acc, 5% enemy first (Sky Bridge)
Storm -5% ATK & DEF (Storm Spire)
Chaos Burn 3dmg/turn unless Dragon Scale+ (Chaos Gate)
Dense Fog -15% accuracy (Twisted Forest)
Distortion 20% chance ATK/DEF swap (Realm Core)
Weather is environmental — potions do NOT cure it.