Gnat Alley Creeper
uncommon. The Gatecrash
world guide describes Gnat Alley as "tunnel-like" and says it is "one of the Gruul guild's most trusted methods of navigating through Ravnica's posh neighborhoods." Various lowlifes "use the winding passages of Gnat Alley to infiltrate restricted districts and bypass security checkpoints." Sounds lovely, doesn't it?