Nalindra

From Syra D&D Wiki

Nalindra is a minor deity of arcana and the sun. Long worshiped by only a scattered few, she rose to prominence as a fierce opponent of Nerull following Heironeous's death during the Deity War.

While most other sun deities espouse the warmth and life-giving nature of the sun, Nalindra instead focuses on its eternal heat and fury, urging her followers to unleash its might upon their foes. She advocates the relentless pursuit of one's foes, and teaches that mercy should never be offered if you would expect none from your enemy.

Her symbol is a staff topped with a sunburst.

Channel Divinity

Followers of Nalindra can take the Nalindra's Fury power:
Encounter * Divine, Channel Divinity, Implement, Radiant, Fire
Free Action
Personal
Target: One enemy
Channel Divinity: You can use only one channel divinity power per encounter
Trigger: You deal Fire or Radiant damage
Effect: The target also takes 1d6 damage of the same type you dealt.
Increase damage to 2d6 at 11th level, and 3d6 at 21st.
Special: You must take the Nalindra's Fury feat to use this power.