Magnetic Mine

A punisher card pointed at a deck type rather than a spell or a creature, which is the unusual part: it taxes the act of artifacts dying, not the casting of them. The trigger is symmetrical in theory and lopsided in practice, since the player it punishes is whoever controlled the artifact that hit the graveyard, including its own caster. Drop it across the table from a deck built on cheap, expendable artifacts (the Memnites, the sacrifice fodder, the equipment that gets blown up and recast) and every trade becomes a two-point tax that adds up faster than the affected player wants to count. The design lives in a small family of effects that punish a specific board-state behavior instead of removing the offending permanent: it does not stop the artifact from dying, it just makes you bleed for it. That makes it a deterrent more than an answer, a card that warps how an artifact-heavy opponent is willing to sacrifice and recur, and one that does nothing at all against a board with no artifacts to lose. The 2 damage is fixed and the trigger is unconditional, so the whole proposition rests on the metagame in front of it: it is a hate piece dressed as an enchantment-style tax, sized for an environment where the things dying are aluminum.