--send your empowers asap do not hold for SS or anything unless dragonrage is up in less than 10 seconds then you hold fire breath im p sure and eternity surge at like 6
--issue #1. you're dead a lot. we need to fix that before worrying about your damage. the #1 thing you can do to get your damage up is to not be dead. here are some things you can do to help fix that:
--drop the talent points in Innate Magic they're functionally wasted with our current tier set and you can pick up other talents that might help you more elsewhere: Twin Guardians and a rescue macro will help make you and a friend much safer in a number of places throughout the raid, and on Rashanan specifically the movements between phases, grab a priest or some other healer so they can finish the move and start healing again ASAP (i see you are grabbing a tank, this should not be necessary unless you have been assigned to do this by your raid lead); Regenerative Magic is actually a significant chunk of leech now that leech from gear has been nerfed; i found Tailwind to be very helpful for rashanan movement specifically but it might not actually be necessary
--DEFENSIVE BUTTONS: you have 19 rashanan pulls and only 9 casts of renewing blaze; this button is immensely powerful on this fight especially for the Erosive Spray mechanic and it will heal you through almost all of that damage and free up Obsidian Scales charges for when you get marked to drop adds, or for overlaps between threads and erosive spray; check Lorrgs for inspiration here https://lorrgs.io/spec_ranking/evoker-devastation/rashanan
also check zephyr casts there; these are most valuable on this fight when used for the Spinneret's Strands raidwide damage
--3 algari healing potion and 6 healthstone presses; if you have the money for 19 tempered potions you can shell out some money for healing potions and press that shit. LIVE LIVE LIVE i cannot emphasize this enough YOU MUST FIND A WAY TO LIVE
alright looking at damage now