Aracnoid Minion

Spider Climb. The arachnoid minion can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Web Sense. While in contact with a web, the arachnoid minion knows the exact location of any other creature in contact with the same web.

Web Walker. The arachnoid minion ignores movement restrictions caused by webbing.

Illusory Appearance. The arachnoid minion covers itself with a magical illusion that makes it look like the humanoid it transformed from. The illusion ends if the arachnoid minion takes a bonus action to end it or if it dies.

The changes wrought by this effect fail to hold up to physical inspection. For example, the arachnoid minion could appear like a humanoid, but someone touching it would feel a hairy carapace-like skin. Otherwise, a creature must take an action to visually inspect the illusion and succeed on a DC 20 Intelligence (Investigation) check to discern that the arachnoid minion is disguised.

Multiattack. The arachnoid minion makes two attacks: one with its bite and one with its claws.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 4 (1d4 + 2) piercing damage plus 3 (1d6) poison damage.

Claws. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) slashing damage.