All in all, a decently playable card, even if holding up five mana is a big ask
Anytime you cast a historic spell, you get to copy it, with the copy losing its legendary status
Obviously, this gets even better with any sort of Equipment, or Auras like Rancor, and is likely the owner of the best colorless mode among Prototype cards
Theyve made prominent reappearance in Modern Horizons 3 , and have even have a Jumpstart 2022 front card after them
Something like Sensei's Divining Top can make sure you draw instants and sorceries for your turn plus some kind of sacrifice outlet to use the demon each turn, and make room for a new one would go a long way too
To get the backside of a battle, we need to defeat it by removing all of its defense counters, but some battles are easier to defeat than others