Assume multiple people have used hit dice. When a bard casts Song of Rest, who rolls the 1d6?
Beginning at 2nd level, you can use soothing music or oration to help revitalize your wounded allies during a Short Rest. If you or any friendly creatures who can hear your performance regain hit points by spending Hit Dice at the end of the Short Rest, each of those creatures regains an extra 1d6 hit points.
My DM and I feel like it's probably intended to be that all creatures regain an equal amount, so the bard should roll one die and everyone who qualifies gains the same amount. Is there anything RAW or RAI (or from a developer) that clarifies it?
To clarify: the question isn't really about who physically rolls the die. The question is if there's evidence that either the bard is intended to make one roll that applies to everyone, or if each applicable party member should roll their own d6.