Aspect of the Pack. You can pretty much just dispell the debuff whenever you want, rather than just in the sphere, but we still take it to the sphere. There's no damage except for falling ice, so no one should get slowed due to damage. It doesn't really help with lightning phase much, but faster movement is pretty beneficial there too. Normal Phase, turn off Aspect.
H Yorsahj and H Hagara we plan on downing next week. H Zonozz the week after, with some attempts on H Blackhorn if we're lucky.
If you want to practice for H Yorsahj, do normal Yorsahj but don't kill slimes. It's pretty much the same fight, and will present you with the same sets of problems.