Memory Crystal

Buyback is one of Magic's most elegant cost-to-flexibility tradeoffs: pay a steep premium when casting an instant or sorcery and the spell returns to your hand instead of going to the graveyard, turning a one-shot into an engine you only have to draw once. This artifact attacks the premium directly, shaving a flat amount off every buyback cost you pay, which is the kind of enabler whose value scales entirely with how many buyback spells you can chain in a turn. The design logic is straightforward and brutal: buyback was deliberately priced so that recurring a spell each turn felt expensive enough to be fair, and cutting that recurring tax compounds across a deck built to abuse it. A spell that was marginal to rebuy at full cost becomes free or nearly free to loop, and any buyback spell that generates more resources than it costs under the reduction stops being a value play and starts being a combo piece. It is a tax-reduction artifact in the same family as cost reducers that target a single mechanic rather than a card type, and its ceiling is defined by the most broken buyback spell in any given pool rather than by anything printed on the artifact itself. That dependency is the whole identity: harmless without buyback spells to feed, a genuine accelerant the moment the deck is built around the keyword it was made to cheapen.