For this one, you need seven generic and two blue mana open every turn
Cosmic Spider-Man Ill include Cosmic Spider-Man because that combination of keywords can be very, uh, swingy (get it?), but its basically a 5-color commander that lets you run all your favorite Spider-Man cards, plus a few all-stars from other sets
In dedicated builds with cards like Yawgmoth, Thran Physician and Umbral Collar Zealot, you can easily lose four creatures to transform into Sephiroth, One-Winged Angel, which adds even more to the aristocrat strategy with huge card draw, and permanent, stackable life drain emblems
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However, if you really want to make things difficult for yourself, you can access that same account-based process from within the MTG Arena mobile client
As far as more subtle clues go, people will complain about the pack having nothing good when its full of good cards in two or three colors, allowing you to deduce their guilds
