Trap Backfire

Sets up variable decoy traps around the caster and the caster hides amongst them. After several seconds, the caster explodes the real trap, inflicting massive Fire damage to enemies within a variable radius. Touching a decoy causes that decoy to explode for Fire damage to enemies within a variable radius. Finding the caster instead of a decoy causes the decoy to backfire, inflicting Fire damage to the caster and stunning them for a variable duration.