Conjure vessel

Summon a magical vessel for a spirit. This vessel will do as you command to the best of it's ability. Roll a d12 and add your intelligence bonus to decide damage, and roll a d20 and add your constitution bonus to decide the health of the vessel. Once the spirit has left the vessel, the magical rock will fade to dust, and it will have been dispelled. If it is in a 2nd level spell slot,  the vessel will be allowed two damaging wizard cantrips.