Arachyr's Toad of Hugeness

Conjure a giant toad at a point that you can see within range to crash down upon your targets. Every creature within 5ft of that point must make a Dexterity saving throw or take 3d10 bludgeoning damage, and be swallowed by the toad if they are Medium or smaller for the duration of the spell on a failed save, or take half as much initial damage and not be swallowed on a successful one. While swallowed, a creature is blinded and restrained, it has total cover against attacks and other effects outside of the toad, and it takes 1d6 acid damage at the start of each of your turns.

If the toad takes 20 damage or more on a single turn from a creature inside it, the spell ends, causing all the swallowed creatures to fall prone within the initial area of the spell. If no creatures are successfully swallowed then the spell ends.

When the spell ends, the toad disappears.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the toad can take up to 20 more damage from the inside and the spell lasts for up to 1 minute longer for each slot level above 4th.