Argo's Warding Whirlwind

When this spell is cast, choose a spot you can see within 60 feet of you. You generate a 10ft radius and 20ft tall cyclone of arcane energy that swirls continuously for the duration. Movement within the area of the cyclone is halved for all creatures that pass through.

Additionally, the spell produces 10 charges. As a reaction, you may consume up to two charges to generate a warding blast to protect from an attack against a creature within 30 feet of the cyclone. For each charge expended, roll 1d4 and add it to the creature's AC, potentially causing the attack to miss.

You may also use your reaction to instead deal damage to creatures passing through the whirlwind. You can expend up to two charges with that reaction to deal 1d4 force damage for each charge expended.

You may dismiss this spell early as an action. The spell ends if dismissed, dispelled, if the duration is reached or if all charges are expended.

If the spell is cast at 5th level, the die for each charge increases to 1d6 and the radius/height of the cyclone increase to 15ft/30ft, further increasing to 1d8 and 20ft/40ft at 7th level and 1d10 and 25ft/50ft at 9th level.