Originally posted by Crop Weaver
How does Mists of Eventide interact with / works on a Battle Group ?
There's not any special mechanical interaction - the battle group just rolls against the poison like any other character would, and any Initiative damage the poison would inflict is converted to Magnitude damage. Since the battle group can't be crashed, the magic sleep effect won't come into play, although the Storyteller can certainly represent the Magnitude loss as soldiers falling asleep.
Does it affect allies automatically ? What about between DB with a blood pact or similar supernatural alliances ?
Does Mists of Eventide affect the caster if she centers it on herself or at close/short range of herself ?
Yes on all points.