Arcane Recovery. Once per day, the yuan-ti can recover expended spell slots with a combined level equal to or less than half its sidekick level (rounded up).

Level 3: Domain Spells. Your connection to Sseth ensures you always have certain spells ready. When you reach the level specified in the Domain Spells table, you thereafter always have the listed spells prepared. The number of spells counts against your total number of prepared spells.

Innate Spellcasting (Yuan-ti Form Only). Zaza's spellcasting ability is Wisdom (+7 to hit / spell save DC 15). Zaza can innately cast the following spells, requiring no material components:

At will: animal friendship (snakes only), poison spray, sacred flame, spare the dying

1st level (4 slots): ray of sickness, bane

2nd level (3 slots): hold person, blindness/deafness

3rd level (3 slots): bestow curse, feign death, prayer of healing

Magic Resistance. The yuan-ti has advantage on saving throws against spells and other magical effects.

Potent Cantrips. The sidekick can add its spellcasting ability modifier to the damage it deals with any cantrip.

Shapechanger. As an action, the yuan-ti can transform into a small venomous snake or revert to its natural form. In snake form, it can cast poison spray and retains its hit points, saving throws, and can cast poison spray. It reverts to its true form if it dies.

Multiattack. The yuan-ti makes two melee attacks.

Scimitar. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) slashing damage.

Shortbow. Ranged Weapon Attack: +3 to hit, range 80/320 ft., one target. Hit: 4 (1d6 + 1) piercing damage plus 7 (2d6) poison damage.