Mayael's Dark Depths (EDH) (EDH / Commander)

This Naya deck is built around Mayael's Aria, an unique enchantment that wins you the game if you have a creature with 20 power or more on your upkeep, a fairly simple way to get a creature like that is with Dark Depths, which summons Marit Lage if you put 30 mana into it or copy it with Thespian's Stage. I've tried to keep the list as budgety as I could.

Mayael the Anima is our commander only for flavour, she brings nothing to the deck except maybe eating some removal. Better commanders would be Gahiji, Honored One (pseudo pillow-fort), Marath, Will of the Wild / Zacama, Primal Calamity (they're mana sinks).

Our backup plan is Helix Pinnacle which similarly to Dark Depths wins us the game if we put enough mana into it, this time it's 100 which is quite a lot unless you can get infinite mana. We happen to have one way to do that; Maze of Ith and Ley Weaver, as they're solid cards on their own. Keep an eye out for the stars to align!

To win with the Aria it needs to make it to our upkeep so to protect it we have cards like Boros Charm, Heroic Intervention and Indestructibility. Sterling Grove as is both a tutor for the Aria as well as protection. Helix Pinnacle has shroud but still benefits from Boros Charm and Heroic Intervention.

Dark Depths is kind of spooky so expect opponents to try to remove it. To protect it we have Charm & Intervention as mentioned earlier as well as cards like Equinox, Trace of Abundance, Terra Eternal and Consecrate Land. Both Depths and Maze of Ith don't produce mana so we run Abundant Growth & Unbridled Growth which in worst case are cantrips or mana fixing.

In case any part of our win condition gets removed/discarded/milled we have cards like Bala Ged Recovery, Eternal Witness and Naya Charm to get them back.

The rest of the deck is mostly a ton of ramp, various forms of removal and pillow-fortesque cards like Ghostly Prison, Smoke, Silent Arbiter, Dueling Grounds and cards that slow down our opponents such as Thalia, Heretic Cather, Stony Silence, Kataki, War's Wage and Magus of the Tabernacle. Not exactly a stax deck but definitely some taxing effects, replace them if your playgroup isn't cool with occasional tax pieces.

The biggest weakness of the deck is probably the lack of card draw. Red's Impulse isn't ideal, white isn't exactly known for card draw and green relies on big creatures to draw which we have none. We have tons of ways to tutor for Dark Depths / Maze of Ith but only two ways to get Mayael's Aria / Helix Pinnacle so it might take a while to assemble.

Lastly I'll mention the mana-base, it's a bit slow as I've tried to keep the deck budgety but keep in mind you need a lot of basic lands for most of our ramp to work in case you decide to tune the deck up.

If you have any questions or suggestions, leave a comment!