These Horizons sets, historically, have affected the Modern format so severely that they undergo a pseudo-rotation. Basically, the format looks entirely different at its most competitive level after their release
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But you can also use artifact lands, although these are more limited in quantity
When crunching the numbers, it quickly became clear that Secret Lair Bonus Cards and Mystery Booster 2 came out on top
Ivory tower: might look a little odd today, but since the deck were slower, it really put a strain on creature based decks and gave a huge advantage to slower controlling decks
