Digest

Choose a creature of Large size or smaller. That creature makes a Dexterity saving throw. If that creature fails they are trapped inside a magical stomach. If they succeed, they aren’t trapped and the spell fails.

The stomach is just large enough to contain the creature and occupies their space. The target is restrained whilst within the stomach, the stomach is opaque and the creature is deafened inside of it. At the end of the creature’s turn it takes 4d6 acid damage. If a creature drops to 0 Hit points inside the Stomach, they are dissolved with everything it is wearing and carrying, except magic items.

The stomach has 60 Hit points and an AC of 15. If the Stomach drops to 0 Hit points the contents spill open, the creature falls prone 5ft in an unoccupied space from the Stomach, if all spaces within 5ft are occupied the creature falls prone where the stomach was and the spell ends. The stomach is Immune to all conditions.  The stomach is Immune to acid and psychic damage. The stomach is Resistant to non-magical slashing, piercing, and bludgeoning damage. The stomach is Vulnerable to poison damage. The creature takes no damage from area effects whilst inside the stomach. The stomach automatically fails Dexterity saving throws it’s subjected to.