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Here's your likelihood of getting items from this slot in the first Play Booster: 87.5% A common from the main set 9.38% A common or uncommon normal reprint from The List 1.56% A rare or mythic rare normal reprint from The List 1.56% A Special Guests card from The List Slot #810: Uncommon Cards These dedicated uncommon slots are exactly as they were in the Set Booster
Mix this with great sacrifice outlets like Korvold, Fae-Cursed King, and you should trigger Szarel multiple times a turn
it has its effects negated, also destroy 1 other monster they control. If you cant do A, you can still do B, and if you cant do B, you can still do A
That means, essentially, that 'Fuck you, nuke the board' is a valid strategy for the computer to follow