While the Play Boosters are likely to be printed in some capacity until the set rotates out of Standard in 2028, the Collector Boosters end much sooner, typically after the initial printing run, which will have a huge impact on card value for the variants that can only be found in this product
Final Fantasy / Magic The Gathering
Mystic Confluence The trick to making a good Command or Confluence is giving it modes that are great in any combination
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The ones I listed do vary in power level, some definitely not at the same competitive level as the ones you mentioned, but I believe having a card speed up any combo general by three turns is not something to be underestimated with
Rather than play actual mana acceleration, the deck uses consistency tools, cantrip artifacts and Ancient Stirrings to find its lands