Zone of Flame

Auras have always needed something concrete to sit on: a permanent, occasionally a player. The entire class is defined by that requirement. Here the attachment target is a zone, one of the game's foundational abstractions, the invisible buckets cards pass through on their way to somewhere else. The parenthetical spelling out which zones are shared and which are per-player is not flavor; it is the whole rules-engineering problem, because a zone is not a game object you can normally point at with an attachment clause. Once you accept that, the damage trigger becomes a counter for that zone's traffic, but only for cards moving through it. Enchant a graveyard and every mill, every dredge, every fetchland shuffle-away stacks up the pings; enchant a library and each draw and each tutor registers; enchant exile and every processing effect or flickered card counts. Note what does not: an ability resolving on the stack is not a card, so the stack is a far quieter zone than it looks. The cost, three red pips inside a seven-mana Aura, is steep and deliberately so, because the effect scales with something the enchanted zone's owner cannot always control. It takes a keyword nobody meant to be extended and extends it one category too far, into a rules primitive that was never supposed to be a legal target. The tokens-aren't-cards reminder is there because someone, immediately, tried to break it with a token engine.