lci draft booster box MTG Pack : The Lost Caverns of Ixalan (LCI) — Twenty Sided and 1 Land cards (Full The Lost Caverns of Ixalan

It's summoning conditions are very strange

Master Ball Mirror Pull Odds Per box : Exactly 1 Master Ball mirror card Total pool : 153 possible cards Odds of pulling a specific card : 1 in 153 boxes (~6.3M / ~$43,000) Odds of pulling a top-10 Master Ball : 10 in 153 (~6.5% per box) Odds of pulling Gengar OR Pikachu : 2 in 153 (~1.3% per box) This extreme scarcity is why the top Master Ball mirrors command prices that rival or exceed the sets Special Art Rares and why the Japanese version has no true equivalent in the English TCG

ACE SPEC cards also have their own associated rarity grade of the same name, marked with a magenta star

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