Be sure to click "Apply Conditionals."

This build is pretty standard end-game fare for only 3 Formas, but the weapon isn't going to set any records.

[Sacrificial Steel] is innately more powerful than [True Steel] so once you have it, always build around it and never look back. You really want this because when combined with [Blood Rush], it will scale into orange and red crit tiers, which net you a consistent 200% and 300% damage multiplier on every hit after critical multiplier has been applied. Using something like [Gladiator Might] will only scale your critical multiplier while the set bonus will anemically push you only from no crits to consistent yellow crits and an occasional orange.

Use [Organ Shatter] to crit harder and [Berserker Fury] to hit faster. Consider [Amalgam Organ Shatter] if you find yourself dumping your combo counter on heavy attacks frequently.

In sustained melee, [Blood Rush] and [Weeping Wounds] spiral to add intensity to crits and ensure a status application on every hit. The status types will add up quickly allowing the damage modifier of [Condition Overload] to quickly surpass the potential of [Primed Pressure Point], which synergizes even better with frames, ranged weapons, and pets that apply additional status types.

We stick to "classic" Viral for the stacking damage boost but if you have other means of applying Viral to targets, consider swapping [North Wind] for [Shocking Touch] to kit Corrosive. If you have means to apply both of these statuses (such as a [Saryn]), stick to Toxin and swap [North Wind] with [Gladiator Might] for general use or Primed Smite for faction specific nastiness. [Primed Pressure Point] won't get you nearly as far as either of these options, so avoid that temptation.