Do you have a budget?

Not really, this is own of those slow come together EDH decks. So no budget, besides the ABURWE (ABURE?) duel lands, I don't like using those.

I think that adding in Tainted Remedy, Shadows of the Past, and Karlov of the Ghost Council to the deck would benefit it greatly. I would also consider tax effects like Spelltithe Enforcer would make it a powerhouse.

They are the best lands. Also Are you talking competitive in 1v1 or multiplayer?

Multiplayer. But the reasons why I don't want to run them is because I'm trying to be allitle not the run of the mill. NinjaBunny01. Huh, I thought I added the remedy. Oh well, thanks for the suggestions.

Also, if you want a more competitive deck, I would keep Alhammarret's Archive, Azorius Signet, Dimir Signet, Sol Ring, Sword of Light and Shadow, and Venser's Journal. I would then add in Gilded Lotus and get rid of the rest. I would then remove any into play tapped lands for shocks (i.e Hallowed Fountain and friends), tengo (i.e Prairie Stream and friends), and buddy (i.e Glacial Fortress and friends). Some good utility lands for cheap are Tectonic Edge, Kor Haven, Bojuka Bog, and Mistveil Plains. Hope this helps.

Felidar Sovereign

ABUR lands they are, and if you want a top notch deck then you need a top notch land bass.

Elixir of Immortality is basically a must in any of my commander decks. Serra Ascendant, Soul Warden, and Soul's Attendant would be great. Reliquary Tower, Polluted Delta, Flooded Strand, Marsh Flats, Hallowed Fountain, Godless Shrine, Watery Grave, Drowned Catacomb, Glacial Fortress, and Isolated Chapel would all be great. You may want to try Consecrated Sphinx and Notion Thief. You look like you're missing some draw; Ponder, Preordain, Brainstorm, Serum Visions, Gitaxian Probe, Blue Sun's Zenith, Sphinx's Revelation, and even Esper Charm and Azorius Charm. Jace, the Mind Sculptor, Jace, Architect of Thought, Jace Beleren, Liliana Vess, Liliana of the Veil, Tamiyo, the Moon Sage, Narset Transcendent, Elspeth, Sun's Champion, Sorin Markov, Sorin, Grim Nemesis, Sorin, Lord of Innistrad, Teferi, Temporal Archmage, and even Venser, the Sojourner could all help. You may want to look into more instant speed removal like Go for the Throat, Doom Blade, Path to Exile, and Swords to Plowshares. Counter spells could help a lot. When I play esper I tend to play a more controlling version so that's how I would change the deck. Keep the Signets but drop the cluestones, borderpost, and obelisk.