As a reminder, they will be available as part of the $600 Super Fan bundle for HASCON (September 8-10, 2017)
MTG Aetherdrift addressed one of the most common player complaints
Minn, Wily Illusionist's ability can also trigger on opposing turns, which is more difficult but certainly doable: looters like Cephalid Broker can do it for zero mana and there's a bunch of permanents that can be sac'd to draw 2 cards like Courier's Capsule, Font of Fortunes, Mnemonic Sphere, and Ior Ruin Expedition
Several turns later, I obtained another stadium, played it, and the same thing happened
With enough surveil cards in your deck, itll grow to huge sizes within a matter of turns, and considering that surveil is everywhere for a wide ranges of prices, you should have no problems making this a 3/3 or a 4/4 by turn-5
This three-mana artifact is pretty standard fare for a mana rock of this cost