These are limited to English collector boosters of Final Fantasy
The restriction to artifacts isnt too bad since many artifacts pick up counters worth proliferatingfor example, anything with modular, Astral Cornucopia, and Everflowing Chalice
Significant cards not on the list: Armageddon $4 Bad Moon $3 Balance $3 Goblin King $2 Lord of Atlantis $4 Mana Flare $3 Mana Vault $4 Mind Twist $4 Nevinyrrals Disk $4 Stasis $2 Winter Orb $3 Zombie Master $4 Demonic Tutor $12 Ice Storm $15 Sinkhole $40 Weve already seen the best of these come back as judge foils, but I wouldnt mind a new foil printing of Armageddon with new art or a first ever foiling of Winter Orb
Check out the full upgrade here
First, there are a number of cards that allow you to double token production, meaning youll be putting out far more creatures than your opponents
I like it a lot because it's a way to pseudo-tutor for your giant creatures in the latter portions of the game and fix your mana at the very beginning for cheap