Hand of Retribution

You gain proficiency in Intimidation and Elvish.

Once per month you can cast sending  without components, but only to contact Vekeshi mystics you are aware of.

In battle, a vestige of the power of Srasama waits to punish those who harm you or your allies. When an enemy you’re aware of deals damage to you or one of your allies, you can use your reaction to deal 2d10 radiant damage to it. That enemy sees a faint burning outline of a six-armed goddess hovering behind you, armed with blades of fire. After you use this feature you cannot use it again until you finish a short or long rest .

At 5th level, the damage increases to 3d10. At 11th level, the enemy also catches on fire, taking 1d10 ongoing fire damage until an action is used to douse the flames. At 17th level, the ongoing fire damage increases to 2d10.