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
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
Collection Starter Set Companion App Into the Inkdark Disney Lorcana Books Hyperia City Illumineer's Quest: The Great Hunny Rescue Attack of the Vine
It even converts a board wipe into a win condition if the board gets cluttered enough
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
Burn spells can disrupt an opponent's strategy