Berceuse

This spell cradles creatures. Choose a creature within range to make a Constitution saving throw. On a failed save, the creature becomes Charmed by you. At the end of each affected creatures’ turns, the creature can make a Constitution saving throw. On a success, the spell ends.

On your subsequent turns, you may spend a Bonus Action to provide 1 of the following effects to a creature affected by this spell, or change an existing extra effect into another extra effect on a creature affected by this spell:
- Before the end of its next turn, the creature has Disadvantage on all ability checks.
- Before the end of its next turn, the creature has Disadvantage on both melee and ranged attack rolls.
- Force that creature to make an extra Constitution saving throw. On a failed save, the creature becomes Incapacitated until the end of its next turn. When this effect ends, the creature returns being Charmed.

Creatures immune to being charmed, and creatures already affected by this spell casted by another creature aren’t affected by this spell. Only 1 extra effect at once could be applied to the same creature. Different creatures can be applied extra effects in any combination.

Using a Higher-Level Spell Slot. You can target one additional creature upon using the spell, and provide an extra effect to one additional creature in a Bonus Action for each 2 spell slot levels above 2.