Start with Lil' Bling Get your Extra Platingup, he's going to line up our damage stream. One its up, use Make it Rain. That will not only hit for some good damage on the cast, but will also set a buff on the opposing TEAM for additional round damage, pretty much negating the health they get every round. From there, pop Inflation. It will continue for a few rounds and set an extra damage debuff on Brutus for two rounds, much like Howl. When Lil'bling's racial is activated, reuse Make it Rain. A few times it went critical and killed Brutus, leaving Bling up for a round to reapply Inflation, which ended up giving me 2.4k Ion Cannons, which is awesome if you can set it up. But mostly it just reset the damage debuff for the Yeti.
When bling goes down, bring in Tranquil Mechanical Yeti. Start with Call lightning. It will drop 1.2k on Brutus face, if you use Ion cannon, it will drop 2.4 k, and we will recover for two rounds, so save it for Rukus. When Rukus enters, start with Metal Fist. From there, use Ion Cannon. It will drop him very low, when yeti dies, bring in the Menagerie Custodian. Depending on the health left, Start with Shock and Awe, or just Ion Cannon him to the Face, GG little Piggys!
The video below shows version 3 of this set with just the lil' Bling and Tranquil Mechanical Yeti power leveling a third pet