This is how to mod the [Cassowar].

You must optimise status for the [Cassowar] to work.

Don't waste your time with critical based mods. Don't try and build this as a hybrid.

Make sure you are using procs that cause damage, such as heat, not just effects, such as cold, if you want to maintain a high DPS.

Get [Twirling Spire] in as the stance. It procs a lot of slash and helps with both proc damage and keeping Condition Overload up nice and high.

Viral and Heat is good against Grineer. Change it up for others - recommend Corrosive and Heat for Infested, Magnetic and Toxic for Corpus and Corrosive and Cold for Corrupted. Always keep in [Primed Fever Strike] and move around two of [Voltaic Strike], [Volcanic Edge] and [Vicious Frost] as needed.

Key gripes with other Cassowar builds:

Pressure Point is nice, but you are using Condition Overload for damage, so leave Sacrificial/Pressure Point alone - it is sub-optimal.

[Drifting Contact] helps build combo and is huge with Weeping Wounds. However, Drifting Contact is mostly a waste of space if you are not using Weeping Wounds.

Please don't use True/[Sacrificial Steel], [Blood Rush], [Organ Shatter] or Berserker. Crit won't work on this weapon.