Harmonic Resonance

Class(es)
Bard
Casting Time
1 Action
Range
Self
Components:
the written lyrics of a duet
Duration:
Concentration ( 1 minute )

You harmonize with the rhythm of those around you until you’re perfectly in sync. You may take the Help action as a bonus action. Additionally, when a creature within range uses a Bardic Inspiration die, you may choose to reroll the die after it is rolled but before the outcome is determined.

You cannot cast another spell through your spellcasting focus while concentrating on this spell.

Rare Versions

Koren’s Lasting Harmonic Resonance. The spell’s effects continue for 1 round after its duration ends.

Source
Adventurer's Guide

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