I never use the mothership, what exaclty is the toilet? You put his units in the vortex, then use storms on the vortex?
Not storm but archons as they have very good splash damage. All you need to do is cast vortex on your opponents units, and then throw any number of archons into the vortex before it collapses. When the vortex collapses, the archons will instantly attack, dealing splash damage to every single unit in the vortex before they spread back out - with enough archons, you will instantly kill entire armies doing this http://wiki.teamliquid.net/starcraft2/Archon_toilet
This post has been edited by Winterhearted: Feb 19 2011, 20:33 PM