While Standard players should always be prepared for Mono-Red decks whenever a new Standard set releases, this rule is especially true with the arrival of March of the Machines
When your cards are sorted, you can build decks without any issues, pull trade options when you need them, and avoid bringing damaged cards to games or meetups
Solitude Solitude does everything a white midrange/control deck wants and it has synergies with lifegain as well
It was for a Charizard card
Early listings for the card pegged its price at around $35, but strong demand wiped out those listings in a couple of weeks, so the cards price naturally spiked
Even beyond Standard and Pioneer red decks, drawing cards when targeted makes this a valuable card