Boneshatter

  The sound of the bone cracking bizarrely erupts from the point of your choice within range - the target’s bones (or exoskeleton) splinter, dealing 2d10 necrotic damage. The target must also make a CON save or have Exhaustion (level 3) from the pain and exertion of the transformation. On a successful save, the target has Exhaustion (level 1).

Exhaustion Levels. This condition is cumulative. Each time you receive it, you gain 1 Exhaustion level. You die if your Exhaustion level is 6.

D20 Tests Affected. When making a D20 Test, the roll is reduced by 2 times your Exhaustion level.

Speed Reduced. Your Speed is reduced by a factor, of five times for each level of exhaustion you have.

Removing Exhaustion Levels. Finishing a Long Rest removes 1 of your Exhaustion levels. When your Exhaustion level reaches 0, the condition ends.

   If the target succeeds at its save, it takes half damage and has level 1 exhaustion. Objects made of bone, chitin, or similar material take half as much damage (+50%) from this spell. This spell doesn't affect a creature that - has neither a skeleton nor a hard carapace.

Using a Higher-Level Spell Slot. The damage increases by 1d10 for each spell slot level above 1 and one more target.