Doku Ame

Doku Ame: As a bonus action the user of this weapon may activate Doku Ame which creates a medium-sized cloud (60ftx60ft) in the sky above the user and as an action the user may activate the cloud which starts raining acid and poison( lasts 2 minutes), any creature in the radius of the cloud outside of the user must succeed a Dexterity saving throw (DC is the users level divided by 2 + constitution and strength modifiers) on a failed save take full damage on a successful save take half damage, this does 3d10 poison and 3d10 necrotic damage.