Kraum, Ludevic's Opus / Tymna the Weaver

How it plays & wins

Kraum and Tymna lead a four-color Grixis-plus-white shell that plays as a fast, interaction-heavy stack deck. It opens with free or cheap mana like Mox Diamond, Chrome Mox, Lotus Petal, Dark Ritual and Ancient Tomb, then holds up Force of Will, Fierce Guardianship, Force of Negation, Misdirection, Pact of Negation and Mental Misstep. Meanwhile Rhystic Study, Mystic Remora, Necropotence and the tutors (Demonic Tutor, Vampiric Tutor, Gamble) keep cards flowing. Kraum and Tymna draw cards off combat, and cheap creatures like Ragavan and Dragon's Rage Channeler apply some early pressure.

The clearest win is Underworld Breach with Brain Freeze. Breach lets you replay spells from the graveyard, and Brain Freeze's storm count can mill an opponent out. Lion's Eye Diamond is the other piece, adding mana for the chain. I can't confidently describe the exact sequencing from the list alone, but these two lines are the primary route to victory.

Analysis written with AI assistance based on this decklist.