The polyp has partial invisibility, granting a 20% miss chance....
Against Kepler's six attacks:
Bite 1d100 ⇒ 43
Claw 1d100 ⇒ 49
Claw 1d100 ⇒ 54
Claw 1d100 ⇒ 27
Claw 1d100 ⇒ 38
Claw 1d100 ⇒ 28
Against Derrik's charge:
Charge 1d100 ⇒ 95
Against Koran's pounce:
Swing 1 1d100 ⇒ 63
Swing 2 1d100 ⇒ 47
Swing 3 1d100 ⇒ 77
Swing 4 1d100 ⇒ 82
Swing 5 1d100 ⇒ 100
The monster's partial invisibility fails to save it from the FOs' fierce assault, and it is rent and beaten to ribbons like a huge, ugly piñata....