R (Fragile)

Strategy and Synergy
Most spells are eligible for this upgrade, including self-targeting buff spells like, activating the spell ability and applying one fragile stack on the player.

Applying the R upgrade on offensive spells increases the openings to apply stacks of fragile on enemies, or in the case of, the upgrade pretty much enhances the spell itself when you got a stack as the first projectile will apply the fragile, with the follow-up shot dealing an already increased up damage, though the fragile stack will be consumed afterwards.

In decks, you may achieve the same effects of this upgrade simply by equipping.