How do we make Urza feel powerful
Number 169 Language English Legal Formats Brawl, Commander, Competitive Brawl, Legacy, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Banned Formats Historic, Modern, Pioneer Rulings (10/4/2019) The earliest opportunity you have to cast Once Upon a Time is during the first player's upkeep, before that player can play a land.
Maybe you are different from me and just want to put a Bird on the battlefield for free with a finality counter
Also, it can be small, and then it transforms back
Basically, the conventional wisdom in Modern is that you can play up to three colors relatively smoothly with a fetchland-powered manabase
It makes you manage your resources (six mana a turn) against drawing a card