Thundercaller

This item will add a 20% chance that your your Hero's Attacks will cast a 50+5*Quality spell that will spark and bounce up to 5 additional enemies, damaging them. This chain lightning will do 2x damage to non-Hero enemies.

Bonuses Given from Enchanting
Common: Increases the damage by 0+10*Quality %. Legendary: Shocking. Decreases the Magic Armor of targets hit by 3+3*Quality.