Empty Slots:
[Galvanized Steel] and [Galvanized Elementalist]

Gas+Electric influence is an option as well. Replace [Vicious Frost] with [Virulent Scourge].

This build applies to other innate heat melee weapons with decent crit stats. [Jat Kusar] and [Nepheri] for example.

If you care about tennokai, it will take an extra forma and an exilus adapter. Use whatever you prefer.

There're only 2 damage types why use [Condition Overload]? The answer is the neutral combo has Impact and Slash. If you don't care about that, use [Primed Pressure Point].

You must outsource Attack Speed for this build. If that's not possible, replace [Galvanized Elementalist] with an attack speed mod. It might need another forma, unless you opt to use [North Wind] instead of [Vicious Frost]. It is also flexible for [Primed Reach]. [Primed Reach] let's you hit more enemies. More enemies hit=More Influence Procs. If you want to go with [Primed Reach], another x2 forma is needed. Can be one if you use [North Wind] or replace the Vazarin polarity with Madurai polarity but I don't recommend replacing it because you might change your mind and use [Galvanized Elementalist] in the future or have a riven that free up a slot.

Great Riven Positives to have not in order of importance: Attack Speed, Electric, Cold, Heat, Range, Critical Damage

If you got a non-innate blast dual elemental riven, for example Attack Speed+Electric+Heat, make sure the last element is Heat so you can put a [Vicious Frost] in front and it will form Blast+Electric. You can also form Gas+Electric if you use [Virulent Scourge] instead.

Same applies if you got triple Elemental riven, the heat and cold must be last so it forms blast+electric. But I don't recommend it since it's less versatile and you're losing out too much on status even if you have [Weeping Wounds].