Typhn's Salt Transfusions

When casting this spell, you choose a medium or smaller target within 30ft of you. This target then begins to fill with salt over a period of 4 rounds, or 24 seconds as you conjure up salt within its confines.

If this target is not meant to contain salt for whatever reason, it may make a con-save, on a fail, it takes 4d4 necrotic damage. This save occurs each turn unless your concentration is disrupted. On the fourth turn, the target takes 6d6 necrotic damage and gains one point of exhaustion if applicable, as any mechanisms or functions are greatly damaged or hindered by this salt being where it isn't supposed to.

Undead are immune to this spell's effects, and constructs are dependent on the DM's Discretion.

At higher levels, you add one extra round of lower damage, additionally, each dice gains an extra 1d4 or 1d6 respectively, for each level above 3rd.