This build is a supplement to my [Excalibur Umbra] build, which you can find here. I recommend you read that you read it first to understand my playstyle. Also, my Umbra mods and [Healing Return] are not fully maxed yet in my game. For the sake of this guide, I maxed them out above. This will mean that I'll have to put one more forma in.
This build is mainly meant for damage and survivability. Off, course, I'm running [Chromatic Blade], however, you can't see it on this page. I have a yellow emissive color, so the IPS is replaced by heat damage. Be aware that my Excalibur Umbra build only has enough power strength for 96% status chance. As I've discussed, I decided to live with it and run Berserker and Warcry (helminth ability) to get enough slashes in. Only 1 in 25 slashes won't cause a proc, and I don't think these odds are bad. You could add extra power strength or status chance, but I'd rather not sacrifice damage to get 9% extra status chance.
I think the Umbra mods are self-explanatory: gotta make use of the set bonus and the Umbra polarities. To make use of the high crit chance, I run [Organ Shatter]. I take advantage of the high status chance that [Chromatic Blade] gives, I run [Condition Overload]. You can only cause 2 different elemental procs with the [Sword Alone], so if you need more damage against a boss, you should run a primer.
I chose Viral as the element, as it is quite versatile against different factions. Feel free to change it to your preference, or depending on the faction you are facing.
This concludes this guide. Thanks for reading.