Incessant Rain is a 5 star The Nihility Light Cones.

Mirage of Reality 

Increases the wearer’s Effect Hit Rate by 24%/28%/32%/36%/40%. When the wearer deals DMG to an enemy that currently has 3 or more debuffs, increases the wearer’s CRIT Rate by 12%/14%/16%/18%/20%. After the wearer uses their Basic ATK, Skill, or Ultimate, there is a 100% base chance to implant Aether Code on a random target that does not yet have it and was hit by the ability. Targets with Aether Code receive 12%/14%/16%/18%/20% increased DMG for 1 turn.