I think this ability would feel a lot better with 2 things, mainly the first one.
1: If the 3 shots pierced through enemies. Maybe if it was only the 3rd shot that pierced at first and all of them piercing was tied into the t3 upgrade
2: Not as big, but if the bonus weapon damage scaled up across the 3 shots.
Currently it's 30% for all shots with the T2 upgrade, but maybe if it was 10%/30%/50% or 20%/20%/50% for shots 1, 2, and 3
1: If the 3 shots pierced through enemies. Maybe if it was only the 3rd shot that pierced at first and all of them piercing was tied into the t3 upgrade
2: Not as big, but if the bonus weapon damage scaled up across the 3 shots.
Currently it's 30% for all shots with the T2 upgrade, but maybe if it was 10%/30%/50% or 20%/20%/50% for shots 1, 2, and 3