MCD II Loot Hunter

← Enchantments

Piercing

AttackRanged weapon

Triggers on: projectile

Tiers

Tier IProjectiles can pierce up to 1 enemies.
Tier IIProjectiles can pierce up to 3 enemies.
Tier IIIProjectiles can pierce up to 5 enemies.
Tier UniqueProjectiles can pierce up to 10 enemies.

The Unique tier only comes built into uniques.

Built into

Humbler Heartstring

How to get the book

GuaranteedTraining with the Enchantsmith · quest reward, first clear · level 6

Data from MetaBot.GG (game build 1.1.1.0)