Don't underestimate the aerodynamic qualities of the common goblin.
140 M12 • ENKev Walker
™ & © 1993—2011 Wizards of the Coast
Legal in: Modern,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Singleton 100,Commander
Oracle Text (click to copy):
View this MTG card on Gatherer
10/4/2004 You can't sacrifice more than one Goblin to get a greater effect. 9/22/2011 Players can only respond once Goblin Grenade has been cast and all its costs have been paid. No one can try and destroy the Goblin to prevent you from casting Goblin Grenade. 9/22/2011 The Goblin you sacrifice to cast Goblin Grenade doesn't have to be a creature. For example, you could sacrifice Boggart Shenanigans (a tribal enchantment with the subtype Goblin).