Got changes made. If anything else seems off or wrong, let me know and will fix.
It is great to be here.
There's always more room on the front lines! (Just ask Fay, for those that have been around a while(Irdeith vs. Duergur))
Only errors I see is that you are adding Dexterity to heavy armor. Splintmail is just 17 AC flat with no Dexterity bonus sadly. You could just purchase +2 plate armor though which would still get you to 24 AC with everything else.
The only other error is that 5e only allows 3 items that require attunement to be worn at a time. In your case, those are the Ioun Stone of Regeneration, Necklace of Adaptation, and Flametongue Longsword. Cloak of Protection would mean a 4th attunement sadly. You would have to swap out one of the other three to wear it. Some items don't require attunement though and you just have to look up which ones do and which ones don't. It's a bit of a pain.
Daishain stated I could not have the flametongue longsword, for it was a Legendary item. So it is why I downgraded it and got the Cloak of Protection. I will fix the +2 Dexterity error for AC.
To be clear, a standard flametongue longsword isn't a problem, its not a legendary item. A flametongue longsword that is also a +2 weapon on the other hand…
In any case, things look good. Others feel free to point out anything I've missed, but I'm setting this character to active. I'll cue Morgaine in as part of my next post, feel free to jump in with as much of an intro as you care for at that point.
(Note for others on damage, she gets a +2 bonus when wielding a single one handed weapon thanks to fighting style. AC is also correct thanks to a +1 bonus from her cloak.).