Bolt Trap

Description :
Fires a volley of three steel bolts.

Upgrades:
Tier 1: Tier 2: Tier 3:
 * Sharpened Steel: Increases damage by 50%
 * Heavy Bolts: Knock units back
 * Charger Springs: For every second the trap is inactive, damage of the next attack is increased by 10%, up to 500%.
 * Armor Piercing: Each bolt deals 5% of the target's max health as bonus damage. Damage is capped at equal to base damage.
 * Frozen Core: Deals cold damage
 * Lightning Rod: Unit hit by bolt takes 30% more lightning damage for 5 seconds.
 * Multishot: Increases the number of bolts fired to 5. Increases damage by 75%.
 * Penetrator: Fires one big bolt that pierces units. Increases damage by 50%. Can pierce up to 20 units.