It *should* stack - 41 pt talent.

I'm torn really. Shammys were something I always expected were good but lol. Clearly these are cherry picked videos but still.

10 Boxing PvP

Zins + 5x Shammys = spell immunity, healing, TOTEMS...HEALING. I could stick Xzin in the Shammy group and move a shammy over to the Zins....

OR

Zins + Warlocks + Shadow(?) or Holy Priest.... = pets, dots, fears, soulstones, healthstones, insta cast nukes, summon/portal/water synergy... etc etc

OR

Zins + 5x (or 4x) Shadow Priests...4-5 silences, 4x counterspells, aoe healing synergy, insta cast dots + dds - oh lol and if I 4x Shadow Word Death, none will take damage as long as one of the 4 kills the target. GG a positive side effect from Grounding Totem "bug".

OR

Zins x 2 - 8x Mages, 2x Priests... a bit boring perhaps

Choices choices......

Warlock team seems like a solid bet though, even if the DD/DoT disparity is there. Atleast they are mostly all instant casts.