You toss a palm-sized sarcophagus at an unoccupied point you can see within range, where it grows to full size in an instant and attempts to ensnare a Medium or smaller creature within 5 feet of it with grimy gauze. The creature must succeed a Dexterity saving throw or be restrained and pulled into the open sarcophagus.   The gauze restraining the creature is an object with AC 10 and 100 HP. It is vulnerable to slashing and fire damage, and immune to psychic and poison damage. If it is reduced to 0 hit points, the spell ends.   A creature restrained by this spell must make another Dexterity saving throw at the end of each of its turns. If it successfully saves against this spell three times, it twists free of the gauze, ending the spell. If it fails three times, the sarcophagus slams shut and sinks deep into the earth. The creature is wrapped head to toe by the gauze and becomes incapacitated. The spell ends, but the sarcophagus remains buried in the earth. The sarcophagus has 1 minute of air, and the creature begins to suffocate after this time.   If a humanoid dies within the sarcophagus, they rise 24 hours later as a mummy under your control, as per the spell create undead. You can only command one mummy animated by this spell at a time. Any time after this spell ends, you can cause the sarcophagus to ascend to the surface as anaction. You can also use your action to shrink the sarcophagus down to its original size while it is unoccupied.