Greasefang, Okiba Boss

In Pioneer, Greasefang, Okiba Boss headlined one of the format's most feared combo decks, pairing with Parhelion II to swing for lethal on turn three through self-mill engines like Raffine's Informant and Vessel of Nascency — the deck was fast enough to demand specific hate. Modern and Legacy have more efficient graveyard hate and faster clocks, so Greasefang, Okiba Boss is a fringe player in those formats rather than a format-defining threat. In Commander, it slots into artifact and Vehicle strategies as a recursive threat, though the attack trigger adds a timing vulnerability that faster tables will punish. Oathbreaker gives it a focused shell where the smaller game size makes the graveyard plan more consistent.