
Fain turns counters, creatures, and artifacts into one another, letting you fuel sacrifice payoffs, ramp via Treasure, and grow threats on demand. You build a value engine that loops fodder into counters, counters into Treasure, and Treasure into Inklings, then untap Fain with to do it all twice in a turn. You grind the table out with relentless incremental advantage and convert it into a big swing or a sacrifice/aristocrats finish.
Add fast mana and untap enablers (Sol Ring, Cabal Coffers, Nyxbloom Ancient) plus free sac outlets like Ashnod's Altar and Phyrexian Altar to break Fain's per-turn limit. Build toward a dedicated combo line such as Pitiless Plunderer plus an altar and a drain payoff, and tighten the deck with black tutors (Demonic Tutor, Vampiric Tutor, Diabolic Intent) to find pieces. Round out with proliferate (Inexorable Tide, Tezzeret's Gambit) to overflow the Treasure side of his engine.
The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.
→ Infinite colorless mana, Infinite death triggers, Infinite ETB
→ Infinite colored mana, Infinite creature tokens, Infinite death triggers
→ Infinite colored mana, Infinite creature tokens, Infinite death triggers
→ Infinite death triggers, Infinite ETB, Infinite LTB
→ Infinite LTB, Infinite ETB, Infinite sacrifice triggers
Combos via Commander Spellbook.
Same color identity (B), by popularity.