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The effect known as falter is one that's been around for a long time on and off
Sedan, SUV, Innova and Innova Crysta are available
Aatchik, Emerald Radian Aberrant Researcher Acridian Adaptive Shimmerer Agitator Ant Altanak, the Thrice-Called Ambush Gigapede Ambush Krotiq Amzu, Swarm's Hunger Ant Queen Ant-Man's Air Force Ant-Man's Army Anthropede Arcbound Stinger Army Ants Atraxa's Skitterfang Bane of the Living Barbed Shocker Battlefly Swarm Baxter, Fly in the Ointment Bayou Dragonfly Beetleform Mage Bilious Skulldweller Biomechan Engineer Biotech Specialist Blade of the Swarm Blightbeetle Blister Beetle Bloatfly Swarm Bond Beetle Brain Maggot Brain Weevil Brass Gnat Brood of Cockroaches Broodguard Elite Broodhatch Nantuko Buzz Bots Buzzard-Wasp Colony Canoptek Scarab Swarm Canoptek Tomb Sentinel Carrion Ants Carrion Beetles Carrion Grub Carrion Locust Caustic Caterpillar Caustic Crawler Caustic Wasps Cavern Crawler Chainflail Centipede Chillerpillar Chitin Gravestalker Circuit Mender Clickslither Clockwork Beetle Clockwork Swarm Coiling Woodworm Colossapede Comet Crawler Crash of Rhino Beetles Cuboid Colony Deadbridge Goliath Deadly Grub Deadly Insect Decimator Beetle Delta Bloodflies Devouring Swarm Dimir Spybug Distended Mindbender Docent of Perfection Dragonfly Swarm Dross Hopper Drudge Beetle
I imagine it has a home in 99 of GBx decks rather than the command zone
First you pay the spell cost, and after that if you still want the card around, you'll need to pay the echo cost or else it's sacrificed
