Chances are it wont be nearly as expensive as Consecrated Sphinx, either, allowing a more accessible, and almost as powerful card draw hate piece to see widespread play
For example, a player might choose to discard a damaged Pokmon from their side or those V Pokmon that had already used their effects like Crobat V or Lumineon V
Its hard enough to deal with a seven, eight, or nine-drop on the first or second turn, but to have to do so against the absolute best creature in their deck against you
It still sees some play in Modern (by myself, if no-one else)
Combine that with what was (in comparison to Wizards of the Coast ) low printing levels, its easy to see why so few of these exist and why people are willing to pay 3k even for a PSA 7
I'm not sure there is any possible Secret Lair drop in all of Magic that would generate as much revenue for Wizards , and this doesn't even include the number of Masters sets Wizards could sell with cards like Underground Sea in the dual-land slot