Ad Nauseam

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Ad Nauseam is a 5cmc instant that draws your entire library at the cost of life equal to each revealed card's mana value — a signature all-in card-draw engine for combo decks that deliberately build around low average mana value (0–1 cost spells, artifacts). It is the defining namesake card for the Ad Nauseam combo archetype in cEDH, typically winning with Lightning Storm or Laboratory Maniac after drawing the deck. In 1v1 Brawl it loses much of its force since Doomsday/Thoracle lines are harder to support and 25 starting life is dangerous to drain. A WotC Game Changer.

• Ad Nauseam decks are built around extremely low average mana value — often sub-1.5 CMC — so the card can draw 20+ cards while losing only 15-20 life; standard 'good stuff' curves of 3-4 CMC make the card nearly unplayable.

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• The classic cEDH line pairs Ad Nauseam with Angel's Grace or Phyrexian Unlife to draw the entire deck at instant speed at zero net life loss, making the combo immune to damage-based removal mid-resolution.

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• Although marked as a Game Changer by WotC, Ad Nauseam is essentially dead weight in any shell that doesn't specifically tune around low-CMC cards — it can be a liability at bracket 3 if the deck curve is not deliberately compressed.

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• EDHREC rank: #1,315
• Game changer: yes