I just want to point out that putting your cards in sections like ramp, card draw, etc. makes it a lot easier for both you and anybody reviewing your deck to figure out how well-balanced your deck is. For example, my Kumena Merfolk deck (
https://deckstats.net/decks/120669/1357840-tippity-tappity/en) has sections for ramp, card draw, and removal, as well as its various themes. One quick look tells me it has plenty of each of the 3 staple categories (card draw, ramp, and removal) and that the deck is well-balanced and will consistently perform well. The sections also let the people looking at it know what its themes are and how it intends to win the game.
After looking at the tab labeled "EDH suggestions", I notice some very important things. You lack
Sol Ring (which is fantastic in almost every single EDH deck but is even better in decks with expensive commanders that have 2 or more colorless mana in their mana cost) and all 3 signets. I love signets in 3 color decks because in addition to being straight ramp, they also fix your colors. If you get flooded with one color, they can turn extra mana of that color into other colors. In 3 color decks, I like them much better than talismans, of which you are running the full 3. I like both full sets in this deck, but if you can only run one set, I would prioritize signets. Another major problem I notice is an almost complete lack fast, flexible removal.
Profane Procession (clunky creature removal)
Kaya's Guile (inconsistent but ok creature removal)
Vandalblast (fantastic artifact removal)
Winds of Abandon (good, versatile creature removal/board wipe)
Aryel, Knight of Windgrace (clunky creature removal)
Embereth Shieldbreaker (new card, so not definitive, but I think it is pretty solid artifact removal in this deck)
Hellkite Tyrant (artifact "removal")
Murderous Rider (another new card, but I think it's actually pretty good, just make sure you can get enough black mana for the double pips)
Vona, Butcher of Magan (extremely clunky creature/artifact/enchantment removal)
So, you have 6 pieces of creature removal, 3-4 pieces of artifact removal, and 1 piece of enchantment removal.
This may seem good, but most of your removal is expensive or sorcery speed. I used to include (subjectively) bad cards like
Vona, Butcher of Magan and
Aryel, Knight of Windgrace because they fit the theme of my deck. Vona is just straight up bad (imo), and Aryel is decent, just not as removal. I would look at swapping in cards like:
Swords to PlowsharesPath to ExileGenerous GiftGrasp of FateChaos WarpAnguished UnmakingMortifyThey are either flexible (can kill nonland permanents, or just permanents in general) or are extremely cheap (means you don't have to leave up much mana). I like having 5 pieces of creature removal and 5 pieces of artifact/enchantment removal. If cards destroy nonland permanents, then I count them as 1 copy of each. I suggest:
Swords to PlowsharesGenerous GiftAnguished UnmakingChaos WarpVandalblastMortifyReturn to DustThese cards are so much more flexible than the ones you are including and they even take up less spaces. Some of your cards can be kept (
Aryel, Knight of Windgrace &
Hellkite Tyrant) because they are good outside of removal, but a lot can just be traded out.
Otherwise, your deck is solid. You have a decent amount of ramp & card draw, further bolstered by your commander.
If you want another decklist to compare it to, here's mine:
https://deckstats.net/decks/120669/1401136-syr-gwyn-equipped-knights/enNote: It is budget, so I have excluded a lot of cards you include, but maybe you will get some more ideas. Mine is also more of a Voltron deck, rather than Knight tribal.