pf2e.fyi
From Pathfinder Beginner Box: Secrets of the Unlit Star, which isn't enabled.

String Slime (BB)

CREATURE 3
Perception +5; motion sense 60 feet
Skills Athletics +11 (+13 to Shove)
Str +4, Dex -5, Con +5, Int -5, Wis +0, Cha -5
Motion Sense

A string slime can feel nearby motion through vibration and air movement.


AC 10; Fort +12, Ref +0, Will +5
HP 90; Immunities acid, critical hits, precision, slashing, unconscious, visual, bleed
Split

Whenever a string slime would take slashing damage (if it weren't immune) and has at least 10 Hit Points, it splits into two identical slimes with half the original's Hit Points. One string slime is in the same space as the original, and the other appears in an adjacent unoccupied space. If no adjacent space is unoccupied, move smaller creatures and objects out of the way to make a space or the split is canceled at the GM's discretion.


Speed 20 feet
Melee Pseudopod +11 (unarmed), Damage 1d8+4 bludgeoning plus 1d6 acid
Tag Team

The slime arcs acidic protoplasm to another string slime within 30 feet along a straight line. Each creature in that line takes 3d6 acid damage with a DC 16 basic Reflex save. A creature that fails its save is also knocked Prone.

Pathfinder Beginner Box: Secrets of the Unlit StarORC