Personally, not a fan of this one, but if you are - well, bonus to you
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It would be a very on point deck if "Call for Backup" meant tutoring up creatures that keep your creatures alive, but running a ton of tutors wouldn't really fit the "precon-esque" environment, such decks are too consistent and will just overrun (get it) other precon-esque decks
Sakuya Otas Roaring Moon deck and Jesse Parkers Miraidon ex deck both focus on fast, hard-hitting strategies that look to take quick Knock Outs right off the bat
This doesnt always matter
Serum Visions would be more than good enough for the format without breaking it, and it may give fringe decks like U/W Control some much-needed consistency