It is much less reliable for final rules MTGPress proxy printing became popular because it solved a very specific Magic problem: players wanted a fast way to turn a decklist into printable proxy TLDR Fan-made Magic cards feel real when they follow the same invisible rules that make official cards readable, balanced, and playable
While it does half the damage (only dealing one point of pain at a time) Razorkin Needlehead is also half the cost of Sheoldred, The Apocalype - an infamous creature who has terrorized Standard for ages, and one of the most expensive MTG cards Wizards has put out in recent years
The replacement for this function is a wild card system
Because theres a billion of them, all beckoning you
Finally, we gave the player a secondary way to advance the Story: they could use mana to progress it
Based on community data from thousands of pack openings, here are the approximate pull rates