Thread:Linathan/@comment-26947994-20160708024816/@comment-26140304-20160708025310

Those blue sparks you're seeing are what's known as Cross Spark (also known as X-Spark). These occur when two Omni units of the same element spark when their damage distribution reaches 150%. This can occur with any element, but the two must be the same with each other in order for Cross Spark to occur.

By Cross Sparking, you give your squad minor buffs known as Resonance buffs. These buffs include elemental mitigation, tri-stat buffs, and OD fill rate buffs. These only carry a small boost, however.