No, but please be aware that the question shouldn't be anything that the opponent(s) would find objectionable
This results in incredibly fast gameplay that is defined by a small number of extremely powerful cards, making Timeless the most high-powered constructed format on Arena
In many cases, this isnt a big deal
Smothering Tithe demands twice as much tax each time an opponent draws a card, and the steady buildup of mana can get out of hand in a hurry, especially in conjunction with all draw effects like Magus of the Wheel
The only one with a clear home is Sink into Stupor, which will likely replace Lorien Revealed in many decks, though I dont think that will be super impactful
That's a powerful way to ramp up your mana base with some mana-producing artifacts, or you could just have two Darksteel Colossuses bouncing around