Festering Aura (Putrid Only). Any creature, other than you, that starts its turn within 5 feet of the spirit must succeed on a Constitution saving throw against your spell save DC or be poisoned until the start of its next turn.

the spirit makes one attack

Rotting Claw (Putrid Only). Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one target. Hit: 1d6 + 3 + 3 slashing damage. If the target is poisoned, it must succeed on a Constitution saving throw against your spell save DC or be paralyzed until the end of its next turn.