While it's hard to accurately guess what the next sale may be, damaged copies set the market price around $250, but you should expect to pay far more given that an HP copy sold for about $550
It has the ability to function like a Charm and offer one of several useful effects at a slightly overpriced rate but it also has the ability to do multiple of those things like a Command and command a much more impressive cost to effect ratio
For every Arceus Ex, players would need a Pidgey, Pidgeotto, and Pidgeot Ex, tripling the required slots for the deck to work
Charge the Winning Bidder for any shortfall between the original price and the resale price
Even information relatively recent to the cards' creation - and from the most reputable of sources - have on time been shown to be not fully correct (e.g
But I think Modern Jund players may want to try it out too, alongside Tarmogoyf