Hey y'all, first time building control for 6 player ffa. I haven't bought the deck yet as im unsure if it will even compete but here is my first draft.
There are a few nice creature options you can add into this if pure spells aren't doing it for you. Also a few other alternative spells and enchantments even though you have some great ones in this.
The main change that I recommend is ditching Aetherling in favor of Approach of the Second Sun and bumping it up to 2 copies if possible. It's by far and away the best Control wincon and I'll often splash White just to include it. Otherwise the main card that should be looking at is Sublime Exhalation over some of the more expensive mass removal spells.
4x Glacial Fortress
4x Hallowed Fountain
5x Island
3x Mystic Sanctuary
4x Plains
4x Ponder
4x Supreme Verdict
4x Terminus
2x Teferi, Hero of Dominaria
2x Teferi, Time Raveler
4x Cryptic Command
2x Sphinx's Revelation
3x Rhystic Study
3x Smothering Tithe
1x AEtherling
Hilarious combo to shut down someone Isochron Scepter + Orim's Chant
You could go land tax route, Land Tax,Propaganda,Ghostly Prison and Aura of Silence. Good mana fixers/thinners areweathered wayfarer,kor cartographer is also decent.
If for some reason creatures are on the board some decent white spot removal cards are swords to plowshares,path to exile and condemn.
Decent Board control creatures to mess with people,Fatespinner,Magus of the Tabernacle,Teferi, Mage of Zhalfir,Grand Arbiter Augustin IV
Guilds of Ravnica - Commander 2018 - Core 2019 - Battlebond - Dominaria - Rivals of Ixalan - Ixalan - Commander 2017 - Hour of Devastation - Amonket - Aether Revolt - Commander 2016 - Kaladesh - Conspiracy 2 - Eldritch Moon - Shadows Over Innistrad - Oath of the Gatewatch - Commander 2015 - Battle for Zendikar - Magic Origins - Dragons of Tarkir
Green - Blue - Red - White - Gold