Mages do not have a pet spell proc spell. Some of the pets get a special proc, but it stacks with the wizard blades line. (I don't think necros do either)
Speaking of pet procs, is there anyway to tell when and how much your pet is proc'ing for? I have all my pet hits turned on, but I never see any non-melee damage, and I have all spells on, and never see it cast. Any other way to see pet procs?
Basically when the beastlord's cast their proc spell on their warder it acts like a spell since I've had my warder on live get interrupted before (I'm pretty sure, but its been a long time so I could be wrong).