Truest Pertification

If This Spell is Cast as a ritual, the ritual takes 3 Days to complete. 

If this spell is not cast as a ritual, you must maintain concentration for 30 seconds while you channel the forces required to successfully cast the spell. If you succeed in casting the spell in this way, a portion of your body at least the size of a finger turns into stone. 

Elemental Forces of stone and earth latch onto the target's corporeal form, rendering them encased in Stone. this effect is persistent until dispelled by the likes of a Wish, Greater, Restoration (cast with an 8th level slot), or a Remove Curse of similar level..