Players such as u/Zombuido, for instance, claimed $500,000 is the baseline price
With SAR odds at roughly 1-in-6 boxes and the Japan-exclusive Master Ball mirror locked at one random card per box out of 153 possibilities, the math creates scarcity that drives serious value
It reduces the cost of your colorless Eldrazi spells by two generic mana, so all your big creatures are two mana cheaper, and when combined with other mana reducers like Shadow in the Warp, can help accelerate your creatures out several turns earlier than normal
As with most games, you are probably wondering "What do I need to be able to play? Right
Id recommend checking out the Megalith/Impcantation deck that can summon this guy on your opponents turn, and also actually search it from the deck so you can do this combo whenever you need
Then the game is all but wrapped up