Elemental Ruin

Description:
You summon the raw fury of Tiamat, calling forth a barrage of elemental orbs that explode in a 20-foot-radius sphere at a point you can see within range. Choose three of the following damage types: fire, cold, lightning, poison, or acid. Each creature in the area must make a Dexterity saving throw, taking 3d6 damage of each chosen type on a failed save, or half as much on a successful one. A creature cannot be affected by the same damage type more than once.

Draconic Empowerment:
If you choose your draconic ancestry for one of the orbs as one of the damage types, you can reduce the movement speed of affected creatures by 15 feet until the end of their next turn.

At Higher Levels:
When you cast this spell using a spell slot of 5th level or higher, the damage of each chosen type increases by 1d6 for each slot level above 4th.