Swarm (Gimmicks and Online Instructions) by Abstract EffectsFrom the team at Abstract Effects comes the color changing card that can be signed. From the team at Abstract Effects comes the color changing card that can produce objects. From the team at Abstract Effects comes the color changing card that allows you to end clean. One card. Endless possibilities. This is SWARM! Fully and easily customizable, this single gimmick can be paired with your favorite deck of cards and provide you with the ability to