Shadowknight spell Torrent of Anguish a level 115 spell (59235) knocks off our pet buff spell Gift of Drendar 113 (59153) every time it's cast
Been a problem since lv100 Torrent, you've not dealt with it already? Also zaps the pet haste buffs of every nec/mag/bst you group with. You can "/blocks add pet 59240" to solve it.
Yes, this has been a problem for a while, and blocking the Torrent buff on your pet is the only way I know how to fix this (as Szilent mentions). I run with an SK, Shm, and Mage, and I have all 3 pets block that buff so that they get their proper pet haste buffs.
The extra AC really helps, at least it does for me. I don't have raid level gear, so I want as much mitigation as possible between Torrent and Refute for Power.