Mental Vapors

Mono-black hand attack has always wrestled with the cardinality problem: one-for-one discard is a trade that degrades over a long game, because every card pulled from an opponent's grip costs you a card to take it. Cipher tries to rewrite that arithmetic by making the spell renewable. Encode it on a creature, connect for combat damage, and the discard fires again, free, every turn that body gets through. The trade stops being one-for-one and becomes a recurring tax on the opponent's hand, paid out on each attack that lands. The requirement is where the friction lives: the discard only repeats once a creature connects, so an attrition effect that normally wants to operate from the controlling seat is bolted to an aggressive combat trigger and lives or dies on it. That tension, a grindy disruption payload riding an attack step, is the whole reason cipher existed as a mechanic, and discard suits it well: the encoded copy resolves after damage, so the card you strip is already too late to be the card that would have stopped the swing. The four-mana front-end price is the cost of installing the loop, not the cost of the discard itself, which is what keeps this from reading as a tempo play and pushes it toward the long, grinding game it is built to win.