Made a post about this 2 months ago in the bugs section to be met with basically no acknowledgement and the issue has not been resolved, so I guess I gotta post this in general and hope it gets more traction here.
Maestro’s energy penetration passive literally does nothing currently. It has no effect. The effect’s description states that it causes his attacks to ignore 50% of the opponent’s energy resistance, but his damage is identical whether he has it active or not.


Two screenshots I took in practice mode today against magma form Abs man, who has a ton of energy resistance. One with the energy penetration passive, one without. This should be a great use case for the passive to bypass some of Abs man’s monstrous energy resistance and deal better damage, and yet both the hit damage of the beam and the energy burst damage are identical. No change. I’m not sure exactly how the mechanic works based on the description and what the difference should be in actuality, but I’m certain the difference shouldn’t be zero.