So I utilize Arcane Strike for this build to supplement some of [Gram Prime]'s missing attack speed. I have more forma than this on my actual [Gram Prime], but that was due to using both [Sacrificial Steel] and [Sacrificial Pressure].
This is Viral + Heat, much like the top build, but with a higher crit cap and a higher crit multiplier for extra damage.
Like most of these builds, it's typically recommended to have the Naramon focus school for Power Spike to eliminate the need to refresh your combo constantly. We wanna sustain that high critical chance from [Blood Rush].
[Condition Overload] is an easy addition which does make it rather situational, unless you yourself have a priming weapon like the [Kuva Nukor] with a magnetic progenitor, or whatever else you fancy or think is meta.
If you don't have access to [Condition Overload], I would recommend dropping another Madurai forma into this, slip [Gladiator Might] down into the slot and replace it with [Sacrificial Pressure]. Or don't follow this build of course, no problem. :)
Without [Berserker Fury], the sustained DPS does look to be less than other builds, but that's why we use Arcane Strike to compensate; because even without it, we're still doing great damage, with a higher average hit. This of course comes with the cost of one or a few forma, which can be annoying for some folks so it's wholly understandable.