demon slayer cards booster box Union Arena: Slayer: Kimetsu No Yaiba Volume 2 – Sparks Trading [Uncommon (U)] Union Arena Demon Slayer: Kimetsu

There are likely two reasons for this

A beautiful Pokmon card and one worth keeping an eye out for when you are ripping booster packs

You send the Synchro Material and the optionally used Xyz Monsters at the same time, and Synchro Summon Xandrose from your Extra Deck

The one matchup where the cant be countered would have been important is Delver , but that matchup is good enough and the combo matchups winnable enough that I often run sideboard hate for combo/control matchups and less so for Delver

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