As for Standard-viable cards, I could see Cloud, Midgar Mercenary maybe getting some play, since it has a low cost and can tutor for useful tools
There are 64 retro frame rares and mythic rares serialized out of 500 appearing in a double rainbow version of our traditional foil, and you can find one in 1% of Collector Boosters
Clever Concealment sees competitive metagame play in 1 format(s): Commander
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One of the four commander decks in the set, Limit Break is themed after Final Fantasy 7 , and, as such, contains cards featuring characters and elements from what is the most popular installment in the series
The Emperor of Palamecia makes up for that by transforming into The Lord Master of Hell once you no longer need the mana dork