Implosion Seal is a specialized Storage Seal. It instantaneously seals all the air within 5-20 m. (Exact radius set at creation time.) Anyone caught in the AoE gets to have their lungs implode as the air sucked out of them. The tag is destroyed by the inrushing air, which causes all the air that it sealed to reappear in a small area, at which point it goes surging out with enough force to wreck a building.