Price of Glory

A war on instant-speed mana, written as a single brutal trigger. Most reactive decks live on their opponent's turn: counterspells, instant removal, flash threats, the whole hold-up posture depends on leaving lands untapped and spending them when it is not your turn. This burns down any land tapped for mana off-turn, which collapses the value of mana left open and forces opponents to commit on their own turns or lose lands for the privilege. The asymmetry is real even though the text is symmetrical: an aggressive red deck spends on its own turn anyway and pays no tax, while the control mirror chokes. That makes it a hosing card wearing the clothes of a global enchantment, aimed at the blue-based reactive decks that defined its era. The wrinkle is in the timing: the land is destroyed after the mana is produced, so the spell or ability still resolves and the opponent gets the effect but loses the source, turning every off-turn counterspell into a one-for-two over the long game. Note the precise trigger, though: it fires only when a land is tapped for mana. Fetchlands sacrifice themselves without tapping for mana, so cracking a fetch end-of-turn slips past it entirely; the punishment lands on the actual mana production that funds a reactive play. The design leans on a familiar lever, taxing reactive play, without resorting to a counterspell or a Stax lock; instead it makes the opponent's own choice to hold up mana the thing that destroys their board.