The Walls of Ba Sing Se

Not yet bracketed (or genuinely unplaceable).

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8cmc legendary artifact creature with defender and 0/30 body. Grants all other permanents you control indestructible — a mass protection effect that locks down board wipes. Signature in stax-prison and control as a soft-lock engine, though the high mana cost and colorless requirement make it slow. Active negatives: anti-tempo/anti-aggro (8 mana is dead weight in fast decks), and removal-magnet (must-answer threat for opponents seeking to break the lock).

• EDHREC rank: #2,855