Multiple attacks on Commander question

[Endoperez]

Champion's Trident doesn't stack with normal quickness:
Post#357177

... and it seems Quickness and Water Blessing work in mysterious ways.
Post#373611



Also, it seems I have actually forgotten some of the information I once had:
Post#361137

I had degenerated into thinking it was actually random!
That last thread mentions Heroic Quickness as well, but it all seems too complicated for anyone to grasp. E.g. the whole thread was started because Communion Master seemed to affect Quickness.