Chaos Mutant (5e Creature)
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Medium aberration, chaotic evil
Saving Throws Wisdom +1
Death Throws. When the chaos mutant dies, it explodes, and each creature within 5 feet of it must make a DC 12 Dexterity saving throw, taking 7 (2d6) acid damage on a failed save.
Mutant Fortitude. If damage reduces the chaos 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 chaos 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 chaos 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.