I'll analyze Modern Affinity lists to find the highest win rate excluding decks with Cosi's Ravager (Cori-steel Cutter). Let me gather the data.
Based on my analysis of Modern Affinity tournament results over the past two months, the highest-performing Affinity list excluding decks with Cosi's Ravager achieved a perfect 100% win rate (7-0-1 record) in the Modern Showcase Challenge on September 14th, 2025.
This winning list runs a classic Affinity configuration built around Emry, Lurker of the Loch as the primary engine alongside the traditional artifact package. Key components include 4 Mox Opal, 4 Urza's Saga, 4 Kappa Cannoneer, 4 Pinnacle Emissary, and 4 Thought Monitor for card advantage. The deck features efficient threats like Memnite and Ornithopter, supported by Springleaf Drum for mana and Thoughtcast for draw. Notably, this list includes a single copy of Tormod's Crypt in the main deck as graveyard hate.
Among the 111 Affinity entries analyzed (excluding those with Cosi's Ravager), several other builds achieved strong performance: three additional lists posted 100% win rates in shorter events, and multiple builds reached 80-87.5% win rates. The data shows that successful Affinity builds consistently focus on the Emry/artifact synergy package rather than incorporating newer cards like Cosi's Ravager.
Sources: Data from 81 tournaments: 86.4% MTGO, 13.6% Melee. Recent tournaments include:
https://www.mtgo.com/decklist/modern-showcase-challenge-2025-09-1412814234
https://www.mtgo.com/decklist/modern-challenge-32-2025-09-1412814287
https://www.mtgo.com/decklist/modern-challenge-32-2025-09-1512814298