Pet Guide: Shademaster Kiryn

Sister of Temptation 1/1/1
Ashstone Core 2/2/1
carry pet with 300+ hp

Pet 1
 Sister of Temptation > Curse of Doom > Shadow Shock till Nairn dies (4-5 casts). Stormoen enters.
cast Lovestruck then Curse of Doom (Stormoen swaps, and the CoD hits Summer)
swap to your leveler and immediately swap to Ashstone Core.
 cast Crystal Prison then Stoneskin. (They swap).

Pet 2

1. Ashstone Core > Burn till Stormoen dies (around 5 casts). Summer returns.

Pet 3
1. Ashstone Core > Stoneskin > pass > Crystal Prison > Burn X2 > swap to Sister of Temptation.

2. Sister of Temptation > pass > Shadow Shock > Lovestruck > Shadow Shock. 

And done!

Strat borrowed from WoWhead by user Roeev!

One of the EASIEST Strats I've seen for this boss with two very easy to get pets!