Perilous Snare

White's answer to an opposing bomb has usually meant handing the threat off to an enchantment that exiles until it dies: Banishing Light, Oblivion Ring, Cast Out. Moving that template onto an artifact body is the wrinkle here, and it comes with a second job the enchantment versions never had. The enters-the-battlefield clause does the familiar work (a nonland permanent leaves until this leaves), but where the older cards sat inert on the board waiting to be blown up, this one converts into a repeatable resource once your opponents have bled enough. At max speed it taps at sorcery speed to drop a single +1/+1 counter, feeding one attacker at a time rather than buffing the whole board. That pairing is gated on purpose: speed only climbs when opponents lose life, so the grow-mode is locked behind exactly the kind of pressure that made you want cheap removal to begin with. Drop it into a slower shell and it is a middling exile effect that becomes a liability if it dies. Drop it into a deck that punches early, and the removal is a formality on the way to a slow-burn engine that never runs out of counters to hand out. It is the temporary-answer reimagined for an aggressive white that wants its removal to keep earning its slot after the target is gone.