I'll Be A Massive Conquistador

 After a massive overhaul, I took Millionaire out for a spin. 

Not bad! The deck actually did more of what I was trying to do. Goes to show that by focusing on the theme, progress can be made. 

3 Thopter Foundry

3 Sword of the Meek

3 Glass Casket

3 Cryogen Relic

4 Etherium Sculptor

3 Disciple of the Vault

3 Tribute Mage

1 Winter, Cursed Rider

1 Confounding Riddle

4 Thirst for Knowledge

4 Mana Leak

7 Island

4 Seat of the Synod

1 Vault of Whispers

1 Ancient Den

1 Plains

2 Arcane Sanctum

4 Esper Panorama

1 Swamp

2 Dromar's Cavern

2 Tezzeret, Agent of Bolas

3 Withering Curse

But I was noticing a bit of a problem, especially when I compared this to similar decks on Moxfield: I do not have interaction. Either I assemble the combo or I don't, and I don't have much protection for it. 

So I thought I would swap out Mephitic Drought for Withering Curse. I have eight ways to draw cards, between X and Y, and now I have seven cards to help with interactions. .