Arcane abjuration

You cast a duplicate of your self within 70 feet of you this duplicate looks and sounds like the caster and can make this action:arcane bolt:reach 30/50 ft. +5 to hit. Hit: 3 (1d6) force damage.the duplicate has ac 10 6 hp. If the duplicate dies it explodes and enemy's within 10 feet take 3 (1d6) force damage