Removing a creature is pretty potent, so the design team decided to make it a one-time thing and turned it into an enters-the-battlefield trigger
This can get annoying for the opponent very quickly
You add cost, stats, and traits to other cards, and while the game takes care of the representation, building and playing around it are aspects that become more complex
Qualifier Season 1 (Standard) with Outlaws of Thunder Junction Promo: Steel Hellkite Qualifier Season 2 (Modern, Standard, Draft, or Sealed) with Modern Horizons 3 Promo: Full-Art Mountain Qualifier Season 3 (Standard) with Bloomburrow Promo: Korvold, Fae-Cursed King Qualifier Season 4 (Standard) with Duskmourn: House of Horror Promo: Dragon Tempest Each season offers players opportunities to qualify for the year-end December championship event
His abilities provide crucial utility, either untapping an artifact for value or tutoring for a specific low-cost artifact from your library
The final Phyrexian-infused mechanic is oil counters