mtg cards duskmourn has a card by Silent Hill's monster designer unleash your inner terror MtG Duskmourn: House of Horror

I also looked over the rules around copying, but didn't find much about "copy of a card"

At the beginning of your upkeep, if this enchantment has twenty or more growth counters on it, you win the game

This, most commonly, is seen in sacrifice shells when it does show up in constructed to try and make the Citadel as consistent as possible

Id also argue in favor of enchantments and artifacts for prowess decks

Left-Handed Magic Cards is a collection of 5 cards: Sisay, Weatherlight Captain

Lastly, Sage's NoulithsSage's Nouliths has us untap a creature when the equipped Hero attacks, giving us a potential blocker later