During the last session, we had two PC's with the same power: a full Bard and a Bard/Warlord Hybrid both had the daily power Stirring Shout.
Stirring Shout has an effect:
Effect: Until end of encounter, whenever an ally hits the target, he regains CHA HP
Do these two effect stack? Or is only the highest CHA modifier applied?
(And as a side question; is it acceptable to rule the effects stack, as this is an effect from a daily power?)