Volatile Concoction

You hurl an unstable experimental concoction at a point you can see within range. Make a ranged spell attack against a target within range. On a hit, it takes 2d6 + your Intelligence modifier damage. You determine the damage type and rider effect from one of the die roll results of your choice. If two dice show the same number, increase the damage dice size by one step (d8s), if you roll only 1s and/or 2s, decrease the damage dice size by one step (d4s). When upcasted, the damage dice size increases by two steps if three or more dice show the same number.

1 Acid (all creatures within 5 feet must succeed on a Dexterity saving throw or take half of the initial damage).
2 Cold (the target's speed is reduced by 10 feet and it can't take reactions until the start of your next turn).
3 Fire (the target must succeed on a Dexterity saving throw or gain the burning condition).
4 Force (the target must succeed on a Strength saving throw or be knocked prone, if it is large or smaller).
5 Lightning (the target must succeed on a Constitution saving throw or is blinded until the start of your next turn).
6 Thunder (the explosion can be heard from 100 feet away. It causes a backlash, you and the target and all creatures within you and the target are deafened until the start of your next turn).

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6.