Caustic Wasps

Artifact destruction stapled to an evasive body is a quieter answer than the burst removal green usually borrows for the job. Instead of one-shotting an artifact at sorcery speed, this insect taxes its controller on connection: the kill is a function of unblocked combat damage, so the artifact only dies if the body gets through. That timing turns the effect into renewable pressure, a flying nuisance that strips off equipment, mana rocks, or whatever artifact engine an opponent leans on, one swing at a time. Every successful damage step is another trigger, so the answer regenerates itself: destroy a trinket this turn, a mana rock the next, with no cost to spend and nothing held in reserve. The fragility is the gate on combat damage to a player. The 1/1 frame means a block does not just deny the trigger, it ends the threat: anything from a 1/1 up trades into the Wasps and removes the recurring answer entirely, so the destroy clause only keeps paying out while the body stays alive and unblocked. The "may" exists to let you decline when there is nothing worth killing; passing costs nothing, and the option returns the moment you connect again. This is the trade green has always made for spending no card to interact: not a single point of interaction but a steady drip of it, contingent on an evasive creature surviving long enough to keep drinking.