Install use mod manager
if manual just drag and drop into appropriate folders

So the Easter eggs in these areas are based on the more popular and well known aspects of Arthurian lore. The sword in the stone, Excalibur, and the Lady of the lake. But they lacked any kind of umph, so I "improved them". Everything made from in game content.

Swords enchantments: Xcaliwar(Excalibur) and Clawrend(Clarent) each have
27 Silver Atk
37 Sun Atk
37 Fire Atk
77 HP Steal (only if with have both in your inventory, you don't have to equip both but you do have to have both on you for this part of the enchantment to work)

Kalignite(Caliburn)
27 Silver Atk
37 Sun Atk
37 Fire Atk
if Xcaliwar is in your inventory additional
7 Silver Atk
7 Sun Atk
7 Fire Atk
50 HP Steal
if Clawrend is in your inventory additional
7 Silver Atk
7 Sun Atk
7 Fire Atk
50 HP Steal

All weapons are up-gradable only with the associated smithing perks, elven Xcaliwar, glass Clawrend, dwarven Kalignite,  and are unable to be disenchanted or crafted. This is to keep them unique.

So a lil bit of the original Arthurian lore (or at least what can be surmised from the stories of old)
King Arthur actually had 2 swords, a spear, and a knife. Also a shield.
Excalibur which was given to him by the lady of the lake the sword of war, and was created by a Avalonian elf
Clarent the sword in the stone, the sword of peace, or sword of the king, may have been made by the same elf or Merlin
  - The following are not included in this mod- lil known known about these items
Carnwennan the dagger of shroud
Rhongomyniad a spear named Ron (not even kidding). The Fate series FGO world has some super exaggerated story for it, goggle that if you want
Pridwen the shield, nothing special is mentioned about it
The swords are mentioned to be unbreakable and forever sharp, they would shine/glow or feel warm to the touch. Most of the time they are attributed with light, holiness and/or the sun. Both sword have many different name cause of different translations Caliburn being one of them. Excalibur was said to have some kind of ability/magic/power to heal wounds, but only if the sheath/scabbard was in Arthur's possession.

"Now you know and knowing is half the battle."
So i took the above info and twisted it into my own cause this isn't old England its Skyrim and cause I am an adult and i do what i want. I am a huge fan of puns and play on words as you will notice with the names and in game weapon descriptions. I based my enchantments from the lore, the sun and fire damage, the silver for holy, and having hp steal if you have both swords based on the Excalibur and it scabbard healing properties when together (since scabbards come with most weapons and aren't separate objects, i wanted to make things a bit different/special). Also cause Excalibur was said to be made by a elf i used the elf weapon models, elven cause elves, glass cause you will only find elves using glass gear, and dwemer cause they were earth elves, look into the ES lore. And speaking of elves i used the master sword old and new color scheme,  to pay homage to one of my favorite VG series LOZ, and cause the master sword is based loosely on Excalibur. Kalignite was made on the idea of combining the 2 swords, and cause i like greatswords more. Honestly i am not even that big fan of Arthurian lore or story, I'm more of a fan of it being a legend(of its mythos if you will). I just felt that something was missing, and that Bethseda could have done more with these Easter eggs, since they dint i did

THE END
but check out this conversion
https://www.nexusmods.com/skyrimspecialedition/mods/27023/