(First real post)
What if there was a multicolor manabase that did not feature any activated Artifacts? What if it also protected spellslingers from Thalia tax and tap effects? How about if it naturally got stronger in bursts as the game progressed (even on turn one or two)? How about if it also featured 4x null rods to shut down others? Or conversely it weaponized Time Vault immediately and featured the cheaper (street price) mana accelerants? And all this is with cheap $5 duals. Is there a possible deck here?
The manabase utilizes 4x Amulets of Vigor in combination with lands that have bursty synergies with the card. These lands have limited negatives the are not only alleviated by the Amulets, but become a feature as they can potentially be tapped multiple times per turn. The Amulets also provides protection from Thalia tax and tap effects and do not fear null rods (in fact, work well with).
4x Amulet of Vigors- the more you have in play the more triggers there are.
3-4x Ravnica Karoos- Could potentially supply 8 mana a turn and bounce lands to reset them providing CA. They are the riskiest to have Wasted, but they have alot of upside.
4x Fast Lands- Act as a dual in the early turns and can trigger Amulets later. Up to 4 mana a turn.
4x Shocklands- Act as a dual (with a kick) but can also trigger Amulets later. Up to 4 mana a turn.
4x Crumbling Visage- The weakest of the lot, but can provide colorless mana and can supply up to 5 mana a turn (they float and trigger).
And then whatever other lands fit the curve/strategy.
From here one could go more accelerants with Mana Crypt, Vault and Sol Ring; however, the more synergistic route may be with Null Rods.
The above is not as strong as a X thousand dollar mana base or as holistic as the Eldrazi base, but it functions pretty well and could be a winning concept with the right kind of deck.
Cheers and salute!