We were discussing Immanence in the Sch Forums and this was the only example of which I had a SS. You don't need to use Alacrity however, It does make things simpler I just happened to have a number of 2hr boxes.
You did a fabulous job using the immanence stratagem to SC for good damage. I've been testing this out as well and been doing damn good SCs myself. GoGo SCH!