Death By Chocolate

As an action you can conjure a wave of molten hot chocolate that splashes onto a 40ft square within range.
Each creature in that area must make a Dexterity Saving throw.
On a failed saving throw, the creatures within take 11d12 fire damage and are completely covered in chocolate.
On a successful save, they take half as much and are partially covered in chocolate.
A target completely covered in the chocolate can use their action to remove the chocolate from their body.
If a creature ends their turn while covered in chocolate, the chocolate hardens into a thick shell of chocolate.
Creatures totally encased in the shell are considered; incapacitated, blinded, restrained, unable to speak, or breathe.
The chocolate shell has an AC of 16, with hp equal to half the rolled damage.
The shell also has resistance to bludgeoning and slashing damage.
Whenever the shell takes piercing damage, half of the damage is dealt to the creature inside the shell.
After the shell is reduced to 0 hp, the shell breaks itself apart, freeing the creature trapped inside.
This feature can be used once per long rest.