C (Pierce)

Strategy and Synergy
Be careful on which spell you apply this upgrade into. For some spells, the ability to pierce can make them suitable for crowd control and to hit all enemies in the row, however for some spells like, it is particularly dangerous since it is capable of hitting the player.

There are a few spells that can greatly synergizes with C, namely, , , , and many other high-damage, non-piercing spells, or spells with on-hit effects such as and , allowing the effects to spread to all other enemies on the row.