
Flying
When The Master of Keys enters, put X +1/+1 counters on it and mill twice X cards.
Each enchantment card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.)
Self-mill aggressively to fill your graveyard, then grind out value by recasting enchantments from the yard via escape. The Master of Keys is both your mill engine (X counters/mill 2X on entry) and your recursion enabler, letting you reuse powerful enchantments, sagas, and removal auras endlessly while building an Esper enchantment-matters board.
Lean harder into self-mill (Mesmeric Orb, Hedron Crab, Stitcher's Supplier) to fuel both the commander's counters and a deep escape toolbox. Add high-impact enchantments worth recasting—removal Auras, Sagas, and draw engines like Mystic Remora—plus enchantment-doublers and Underworld Breach lines for a faster, more deterministic finish. Round out with strong Esper interaction and tutors (Enlightened Tutor, Demonic Tutor) to assemble your engines and protect them from graveyard hate.
The most-played cards for this commander, built from aggregated deck data (the Mythic Graph). Build public decks to seed it.
→ Exile your library, Near-infinite magecraft triggers, Near-infinite death triggers
→ Exile your library, Near-infinite magecraft triggers, Near-infinite death triggers
→ Exile your library, Near-infinite magecraft triggers, Near-infinite death triggers
Combos via Commander Spellbook.
Same color identity (BUW), by popularity.