Chaos Mutant (5e Creature)
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Medium aberration, chaotic evil
Saving Throws Wis +1
Mutant Fortitude. If damage reduces the mutant to 0 hit points, it must make a Constitution saving throw with a DC equal to damage taken, unless the damage is from a critical hit. On a success, the mutant drops to 1 hit point instead.
Tentacle. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) bludgeoning damage, and the target is grappled (escape DC 13). The mutant has two tentacles, each of which can grapple only one target.
Chaos mutants are loathsome creatures of darkness. Once ordinary humanoids, foul sorcery has made them into slimy tentacled horrors. They have forgotten their previous lives and descended into animalistic savagery.