Deep Magic Volume 2 (p.149)
Busy Bee
3-level Conjuration
Casting Time: 1 minute
Range/Area: Self
Components: Verbal, Somatic, Material
Materials: tiny carving of a bee worth 50 gp
Duration: 1 hour
You summon a spirit that animates the bee carving for up to 8 hours, which attaches to your clothing, sits on your equipment, or otherwise remains within 1 foot of you. If the bee is ever more than 1 foot away from you, this spell ends.
When you lose concentration on a spell of 3rd level or lower, the spirit animating the bee takes over and maintains concentration on that spell until that spell ends or this spell ends, whichever has a shorter duration. While the spirit is maintaining concentration on a spell, you can’t cast a spell that requires concentration.
The spirit can’t be attacked or destroyed, and its concentration can’t be interrupted. You can dismiss this spell at any time (no action required), and a dispel magic spell cast on the bee, if successful, ends this spell.
At higher levels: When you cast this spell using a spell slot of 4th level or higher, the spirit can concentrate on spells with a spell level up to the spell slot you used, and the duration increases by 1 hour for each slot level above 3rd.
Available for: Bard, Druid, Warlock