Yeast of Thoughts and Minds

Compress: The Yeast of Thoughts and Minds can force itself into a book at the end of it's turn being able to exit at will (can't attack while in a book)

Punch: 5ft, +5 to hit, (one creature) (2d10 +5) bludgeoning damage

Sweeping Hand: 10ft cone, +3 to hit, (multi-creature) (1d10 +5) bludgeoning damage

Fling Flesh: 30ft, +3 to hit, (one creature) (1d12 +3) acidic damage (2d6 acidic damage every round if an action isn't taken to clean)

Pseudopod: 5ft +6 to hit, (one creature) grapples a creature (in order to let go each time the YTM is hit they need to make a CON saving throw of 15 or higher) (grappled creatures make a DEX save of 13 or higher to break free)

Drain Mental Energy: A grappled creature needs to make a intelligence saving throw of 14 or higher, if failed the creature losses 1 INT point (2 if a 4-2 is rolled, 3 if a 1 is rolled) (only lasts until the YTM is defeated), if the creature's INT drops to 0 then they go unconscious 

YTM can make 2 legendary actions, one at a time, and at the end of another creature's turn.

Globular Dance: If next to books then 1d4 allied animated books come to the aid of the YTM with the same initiative