Cosmic Infusion

You infuse your attunements with additional energy. When you deal fire damage or persistent fire damage due to being photon-attuned, you can instead choose to deal vitality damage or persistent vitality damage, which damages creatures with void healing, such as undead. While graviton-attuned, Strikes with your solar weapon cause the target to count all squares within 10 feet as difficult terrain, rather than just adjacent squares.