Venom/Boon Sharing questions
Yes. Any kind of AoE has a limit of x5 targets. NPC mobs and player controlled pets (either through temporary things like Thieves Guild or class features like a Ranger’s pet) also count.
Once upon a time in beta, I vaguely remember it being different. The issue was that one person would just AoE buff everyone within the power’s range, which caused a situation where only a few buffing players were needed to have some rediculous effects.
As a Venomous Aura PvE player, I will tell you that you’ll rarely be in a situation where you’d hit more than x5 targets. If people are stacking up on a Champion mob or some kind of dragon, then you might not be able to cover everyone who is near you. Yet that’s more of the exception to the general rule of thumb.
For your reference, Venomous Aura does now create a visible AoE ring whenever you use a Venom power. This helps us to adjust (as needed) to get as many people as we can within our AoE buffing range.