With Solstice of Heroes currently ongoing in Destiny 2, there is a mechanic that is not really explained well in the game, but all players should be aware of. This is Solar Empowerment. You will also be able to take advantage of Arc and Void Empowerment as well.
During the Solstice of Heroes event, all kills on enemies will generate Elemental Orbs that match the element type of whatever killed them. Solar kills generate Solar Orbs, Void kills make Void Orbs, and so on.
Each day also has a daily element, which you can check on your main Inventory screen. This will change each day, so make sure you check to make sure you are generating the right type of Orbs to take advantage of the Empowerment buff.
If you pick up Orbs that match the element of the day, you will get a stack of elemental charge. When you hit 30 stacks, you will become empowered, gaining the effect detailed below until all the stacks burn through, which takes about 30 seconds. A stack will be stripped away roughly every second after you hit 30 and gain the Empowerment buff, so make sure you use it while you have it.
Solar Elemental Buff
- Equip your Solar subclass and weapons to generate Solar orbs. Then, collect them to wield their Solar elemental power. While empowered, Guardians emit a burning wave of energy that damages anything around them.
Void Elemental Buff
- Equip your Void subclass and weapons to generate Void orbs. Then, collect them to wield their Void elemental power. Crouch while empowered to become invisible and gain Truesight plus enhanced ability regeneration.
Arc Elemental Buff
- Equip your Arc subclass and weapons to generate Arc orbs. Then, collect them to wield their Arc elemental power. While empowered, Guardians move with enhanced speed and deal greater melee and Sword damage.