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Japanese text

Change the battle positions of all Attack Position monsters on the field to Defense Position and vice-versa.

(5 cards per booster)

Turn on notifications so you dont miss the next big pull

Id also cut Nighthawk (its just a vanilla creature), Blood Artist (without a ton of sac outlets/reanimation engines, you cant really control the trigger, and the effect is pretty small), Chalice of Life (getting to 50 is incredibly unlikely), Polluted Bonds (5 mana is just too much for a trigger that happens one or less times per turn) and Vensers Journal (doesnt do anything productive)

1 Niv-Mizzet, the Firemind