It doesn't make an army of tokens as effortlessly as Spellslinger staples like Talrand, Sky Summoner, but that can work in Roost's advantage, perhaps letting it fly under people's threat assessment radars
Some are alternative treatments of cards found in the Commander decks
Stadium Headliner This goblin warrior goes in the same Standard environment as Krenko, Mob Boss and Baylen, the Haymaker, and thats just the first go-wide decks I think of
One of my biggest concerns with crossover sets is the temptation to make it oops, all Legendary creatures, just cramming in as many recognizable faces as possible without a real mechanical backbone
The set is also confirmed to have cards from every mainline numbered entry, so unfortunately we shouldnt expect cards from things like Tactics, Type-0, and certainly not Kingdom Hearts
The seller initially put it up for $200,000, but no one was interested