A non-infinite alternative for Memnarch EDH.

Dizzy Spell can find High Tide/Mystical Tutor/Sol Ring/Pithing Needle/Relic of Progenitus/Swan Song in a pinch. Muddle the Mixture can find Merchant Scroll/Ratchet Bomb/Counterspells/Reshape to find what's relevant to keep you alive.

The game plan is a High Tide/Extraplanar Lens + Turnabout/Peregrine Drake/Frantic Reseach to create enough mana to pay for a huge Blue Sun's Zenith or 14 mana to steal something as soon as Memnarch hits the board. Typically you can capture way more.

There's also a light control sub theme allowing you to stall the game until Memnarch is online, and keep your artifacts from getting wiped.

Definitely can steal the game completely out of left field. If you're not on a budget Candelabra of Tawnos is perfectly at home here. And if your group is OK with infinite combos Karn + Voltaic Construct or High Tide + Palinchron can give you enough mana to mill a player out with Blue Sun's Zenith or let you steal EVERYTHING with Memnarch.