Up to 5-20% Strength based on the charge time of your heavy attacks. Stacks 3 times.
12-24% Rending on Enemy Weak Spot Hit for 3.5s. Stacks 5 times.
4.5-6% Close Range damage on Repeated Hit. Stacks 5 times.
1-4 Burn Stack(s) on Critical Hit to a maximum of 3-12 Stack(s).
Abuse Psykinetic's Aura/Puppet Master/Seers Presence to give your team the maximum possible amount of Ults in a given time frame - sometimes up to 3x or even 4x the standard amount. Feel free to swap a toughness node for "By crack of bone" if required. Mk 4 Dueling Sword w/ Thrust, Uncanny Strike, Carapace and Unyielding. Recon Mk XII is the optimal weapon, as infernus scales incredibly with the extremely high crit percentage of the Gunker build. You can subtract a +3 Stamina Curio for a +17% Toughness, if required.