In the example 037/078, the denominator represents the total number of cards in the set, while the numerator represents that specific cards number
Theres a pretty wide range for how to make a proxy. Some people write the name and abilities on a piece of paper covering a reversed card in a sleeve, some write the name of a card on the back of a bulk card like a basic land, and many people just print out the card in question
I can picture this card seeing play across multiple formats, possibly even being the big chase card for the entire set
Mana value is fixed and based only on whats printed in the top right corner of the card, not on how much you actually spend to cast it
(6/18/2021) Each Aura and Equipment attached to a permanent that's phasing out also phases out
It all started with a bunch of dedicated Magic players voting over 56k modems back in 2003, and that's beautiful.