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There is a Legacy version here.

PFS StandardShared Assault Feat 12

Bard 
Source Player Core pg. 106 2.0
Prerequisites Courageous Assault

In the triumph of battle, you can share the glory with another ally. When the ally you chose for Courageous Assault critically succeeds at the Strike granted by that action, another ally affected by your courageous anthem composition spell can immediately use a reaction to make a melee Strike. This effect doesn’t continue to a third ally, even if the second ally also critically succeeds.