[Rhino] build for very high amounts of Iron Skin. Highest amount of armor that can be achieved without sacrificing strength (or pet choice). [Energy Conversion] was chosen instead of [Transient Fortitude] to not [Sacrifice] duration, so this build can be used for good enough Buff (172%) and CC too. For some more utility [Energy Conversion] can be replaced with [Stretch] since it adds to his 3 and 4 while also allowing [Rhino] to charge more enemies and further away. More duration is not as important.

Recommended but not required things to have :

Madurai/Naramon Focus with Blazing/Executing Dash or any other weapon that opens anemies for finishers to trigger Arcane Ultimatum

Magus Anomaly operator arcane to group enemies together easily.

[Dethcube Prime] with [Energy Generator] and [Synth Fiber] : To proc Energy and [Health Conversion] easily and help with the negative efficiency. Energy Pads are good to have but can be worked around.

Artax sentinel weapon with high Fire Rate and Reload Speed : To constantly proc Growing Power,

Simulacrum demo : https://www.youtube.com/watch?v=7Kuo_qledOU