I don't remember many details from Jean Wells's Palace of the Silver Princess (BD&D Module B3), but I've never forgotten the image to the left: Erol Otus's amazing depiction of the hideous decapus. This foul beast may have begun its existence in the Principalities of Glantri, but it seems perfectly suited to life in the Jungles of Qo and Qush. In those trackless wastes, the wild decapus swings through the trees, using its uncanny powers of illusion and ventriloquism to trick its prey. To see through the decapus's deceptions, a hero has to pass a Mind test with a difficulty modifier of "hard" (-2). At the GM's discretion, heroes may add relevant careers to this roll. (Appropriate boons may allow the hero to roll a bonus die on the test as well.) If the decapus's illusion remains unbroken, it has the advantage of surprise and gains a "free" round of attacks.
Attack with bite +4; d6+2 damage (only against a grabbed target)
Attack with 3 tentacles vs. a single target +2; d6+2 damage
Attack with 6 tentacles vs. a single target +4; d6+2 damage and target grabbed
Attack with 6 tentacles vs. two targets +0; d6+2 damage per target
Protection: d3 (tough, rubbery hide)