Zefraath The Zefra archetype has some seriously cool lore surrounding it, combining the Qliphorts, Nekroz, Shaddolls, and more
It can also be used for combos because it can also destroy cards of Whether the ritual to be used is the main house that can be searched with black steel or an easy-to-use high grade, if it is naturally incorporated into the Red-Eyes Deck, the main house that supports black steel, and if it is used as one of the ritual decks, Senju and Manju should also be included
Exchange of the Spirit Old Text Activate only while there are 15 or more cards in your Graveyard
Getting plenty of play will probably have boosted its market value at least a little, but ultimately it's the low supply, inherent to any prize card, that has made Diablosis so expensive
2 life seems like nothing when you start at 40
For the players using these poisonous cards, I imagine its quite fun