From GRAY RAVENS
Every 3-Ping made in the Normal Form generates 50% more Energy and 1 Signature Point. Up to 2 Signature Points can be accumulated. Using Form Switch in the Normal Form will transform Plume into the Arctic Form. Switching with full Energy will re-arrange all the existing Signal Orbs. Ice DMG is increased when in the Arctic Form. A 3-Ping grants 1 Signature Point. Final - Ice Flash requires 4 Signature Points to cast.