Death Burst. When the yeastling dies, it explodes in a burst of noxious gasses. Each creature within 5 feet of it must then succeed on a DC 12 Constitution saving throw or take 3(1d6) poison damage and be blinded for 1 minute. A blinded creature can repeat the saving throw on each of its turns, ending the effect on itself on a success.

Sticky Body. The yeastling can climb as though it had the Spider Climb spell.

Slam. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 5 (1d6 + 2) bludgeoning damage. On a hit, the target must make a DC 12 Strength saving throw or be grappled; a creature that is already grappled becomes restrained.  A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Boozy Breath (Recharge 6). The Yeastling exhales a 15- foot cone of noxious fumes. Each creature in that area must succeed on a DC 102Constitution saving throw or take 6(2d6) poison damage and be poisoned for 1 minute.