This card's effect can be activated when a card that was already face-up on the field activates its effect
Everyone is clamoring to get their hands on some precious Rise of the Floodborn product, and theyre mostly chasing these gorgeous enchanted cards
Duel occurs
This has to be the most expensive Sol Ring ever, if you believe the five listings that are currently on Cardmarket
Regardless, I dont know that now is the time for more than 60 cards, but I do know that as the card pool expands, it gets easier and easier to find more spells of a similar power level, but no other lands are close to the power level of fetchlands, so the incentives to build to maximize the power of our lands over the power of our spells do increase in some way over time, which is to say that, even if its not right now, it could be someday, and getting there first might be the best way to truly break Modern.
My conclusions are only based off a card pool of about 40 1st edition holos so more data would be helpful to proving this