Preface I had mentioned doing something like this before and had some positive reception, if not allowed or any recommendations please feel free to let me know.
Excalibur epitomizes the warrior spirit. His master swordsmanship deals high damage. He is the embodiment of martial excellence.
1ST ABILITY Slash Dash-Slice through enemies, becoming invincible throughout
2ND ABILITY Radial Blind-Send out a blinding wave, briefly stunning enemies in an area
3RD ABILITY Radial Javelin-Throw out projectiles around you, causing damage to enemies
4TH ABILITY Exalted Blade-Summon a powerful sword, equipped with mods of your choosing
Subsumed ability-Radial Blind
Progenitor Element-Electricity
Released in Vanilla 10-25-2012
One of the three starting frames offered, he also comes in the form Excalibur Umbra earned in the main quest line and the exclusive Excalibur Prime-This prime is only for the original founders who supported Warframe in its inception.
The parts if not selected at the start come from Lech Kril on Mars, and he can be bought fully assembled from Teshin through Conclave once you have achieved Typhoon rank.
The invincibility frames on his 1 can help with survival but it really doesn’t have enough power to handle Steel Path unfortunately, plus can’t be used in a lot of harder or boss fights. I do think his abilities could use a buff across the board but that will be a long time if ever coming