So, while $150 for an experience is vastly less than one would pay if playing real competitive Magic, its still quite a lot compared to a random board game, where $150 is going to get you a massive box of plastic figures for some 6-hour epic space game, plus a new deck-building game, plus some old Silverline game from FFG
And even if you already have a few cards in hand, playing Oak at the right time will almost always change the entire complexion of your game
This creature requires an additional one mana to duplicate a creature, and that hinders its efficacy
Architect of Thoughts ultimate ability is great, but it will take you five turns to activate it and the payoff depends entirely on your opponents deck
To add insult to injury, if your opponent ever does find a way to deal with Umezawas Jitte, you get to cash in any remaining counters for 2 life a piece