Chaos Field

Choose a point within range that you can see, and roll a d8. Until the spell ends, any creatures that ends their turn within a 15 foot cube of that point must succeed on a Dexterity saving throw or take 1d10 damage. The number rolled on the d8 determines the attack’s damage type, as shown below.

1 - Acid         5 - Lightning

2 - Cold         6 - Poison

3 - Fire           7 - Psychic

4 - Force       8 - Thunder

Also, all damage dealt to, or by, a creature within a 30 foot cube* of that point is converted to the damage type corresponding with your roll.