So I've always assumed these two work together nicely, but now that I read closer it appears that heroic echo only works with spells, SLAs and magic items.
Bardic performance is a supernatural ability. Do those stack? If not does the shared buff ability bypass the requirement? How are people using heroic echo?
I'm trying to figure if it's worth having the eldritch heritage line for this bloodline.
heroic Echo does not work by Bardic Performance, as its a Supernatural-Ability (SU).
And it only gets triggered by the listed sources, namely: "Spells", "Spell-like abilities" and "Magic Items".