I'm sorry, were these yours?

[IVRafa]

{memnarch} + {power artifact} + {grim monolIth}

Use power artifact on grim monolith to cheapen its abilities. Get unlimited mana. Use memnarchs skill to steal everyone's permanents. Memnarch works with all infinite mana combos.

(Warning: This como will show no mercy towards wallets of all kinds)

[Maximo]

{Grim Monolith} only makes colorless mana, though, so even if you had unlimited, you wouldn't be able to keep paying for {Memnarch}'s abilities. Switch it up to get that colored mana.

[BlackJester]

Either {Mycosynth Lattice}, or {Gemstone Array}

[BadLuckIrish]

Or silvers :3