This is thanks to the Black & White series' Legendary Treasures card being "basic." This means it can be used from the jump without evolving into this form first
Ive managed to select the best of 289 total cards, considering aspects like Constructed playability, Commander playability, and financial value
Magic: The Gathering's Edge of Eternities set officially launches August 1, but pre-release events for the set will begin on July 25 - this week, as of writing
Far from bad, but still a decent curve filler
Im not sure what the best maindeck to take advantage of Oko is, but were only weeks into Modern and were seeing what I consider unprecedented proliferation of Oko across a variety of archetypes as people are just starting to figure out the card
One immediate idea that comes to mind is to use cards like Bolas's Citadel or K'rrik, Son of Yawgmoth that allow you to cast spells by paying life