Very short question on Communion Master and the slave matrix

[atul]

During Dom1 times I once had some fun using communition in somewhat 'reverse' way. A horde of Marignon's initiates (fire1) with slave matrixes and one Grand Master (random in water) with master matrix.

GM had orders to cast quickness - phoenix power - (that astral spell that boosts all paths one up, forget the name), and what do you know, every one of those weeny initiates was hasted and hurling fireballs and -clouds by third turn. Don't know how feasible it is to use communion like that, but it was fun to watch anyway.