Another of the spells that can be found in the necromantic spellbook Cryptichronos transforms your arms into poisonous snakes.
Level 4 transmutation
Casting Time: 1 action
Duration: 1 minute
This spell transforms each of your arms into a writhing, hissing serpents that can strike at any opponent within arms reach. Each arm attacks as a poisonous snake.
Bite. Melee Weapon Attack: + to hit equal to you spell attack bonus, reach 5 ft., one target.
Hit: 1 piercing damage, and the target must make a Constitution saving throw against your spell save DC, taking 10 (4d4) poison damage on a failed save, or half as much damage on a successful one. It also inflicts the poisoned condition.
You cannot cast this spell while holding an object, or wearing anything on your hands (e.g., rings or gloves). You cannot grab ony object while under effects of the spell, or cast any spells with a somatic component. You can dispel the sinuous horrors with a bonus action.
A dominate beast spell can be used to pacify the sinuous horrors if you fail a saving throw. Note that the serpents cannot be compelled to attack you.