VL 4 talent now gives +2 pierce.
But if you don’t use all the pierce(hit less than 3 targets). Then the pierce won’t reset. So on your next shot, you’ll get only your remaining pierce.
If you hit 2 target with your Q then on your next Q you’ll hit only 1 target.
If you hit 1 target with your Q then on your next Q you’ll hit up to 2 targets.
Projectile just disappears.