The Vanguard will be eager to hear of your newfound power.
Speak to Ikora Rey in the Tower.
1
Riding the StormThis step
Awaken your latent power of Arc Light by generating Orbs of Power and defeating combatants to earn points; using damage grants substantially more points.
Orbs of Power can be generated by casting your Super.
Energy weapons deal elemental damage. Arc element weapons can be identified by selecting them in your Character screen and looking for the symbol.