Entomb

You Choose a creature within range to magically conjure an iron maiden around, shutting them inside with overlaying chains.  The target makes a Constitution or Strength saving throw. On a failure the target is locked inside and dealt 5d12 piercing damage from the nails within.  The coffin turns to ash at the start of your next turn. The creature has total cover within the coffin and cannot mover or escape by any means, other than teleport.  On a successful save, the creature takes half damage and the coffin immediately fades.  

If the creature is undead, they have disadvantage on the saving throw, unless they have advantage against effects like turn undead.

If the spell kills the creature or knocks them unconscious, there body will be deposited 110 feet into the ground and buried.