How did you come up with the handle UnlistedLeaf
Doing a quick bit of math, if the 57 main-set mythics I've gotten so far cost $300, this would mean that I'm paying roughly $5.26 per mythic, which would mean the remaining 27 main-set mythics would cost another $142
Chart shows the price of Roaring Moon #109 at the end of each month going back as long as we have tracked the item.
This set contains very powerful cards and is therefore only legal in Modern and all eternal formats
Like the mental trick with dealing with Millstone, just imagine that the exiled cards are on the bottom of your library and dont sweat it (unless your deck plans on winning with a specific combination of cards)
The first will force the targeted foe to draw three and discard three at random (good for discard punishing decks like Megrim), sacrifices a non-token artifact (not a Treasure, Clue, Blood, or Food), and the Balor shoots them for the damage to the cards in their hand (nice)