This page covers a DPS-focused strategy for High Botanist Tel’arn in The Nighthold. While it's tailored for DPS, other roles may also find the information useful. If you have any suggestions or feedback, you can leave a comment below or tweet @VirendraDG.

This guide has been updated and maintained based on my own experiences with the fight as well as Dungeon Journal information. I'll continue to update it as-needed.

General Mechanics and Abilities

Normal and Heroic

Stage One: The High Botanist

• will target a random player and set off three explosions in quick succession that get bigger and bigger and deal a massive amount of damage. Run, run far away.
• roots the target, dealing stacking damage. This needs to be dispelled quickly, but when it's removed, a Parasitic Lasher spawns.
• Parasitic Lasher fixates on the closest player. If it touches them, that player will gain and the cycle starts over.
• Parasitic Lasher can be stunned and slowed, but gains movement speed over time and will eventually become immune to those effects.
• spawns a ring of solar energy that collapses onto a central point. Players need to react immediately to move through the space between patches or else suffer massive damage.

Stage Two: Nightosis

• At 75%, Solarist Tel'arn will spawn.
• All abilities from Stage One continue.
• will target the tank and deal damage to anyone within 4 yards. Don't stand on the tank.
• places three Plasma Spheres around the room that slowly lose health at a steady rate.
• When the Plasma Spheres expire, they use , inflicting massive raid-wide damage and applying a debuff that increases damage taken from by 100% for 5 seconds.
• To manage the explosions, DPS should focus one orb at a time, killing them with enough time apart to allow the debuff to expire and healers to top the raid off.
• Don't even multi-DOT the Spheres.

Stage Three: Pure Forms

• At 50% HP, Tel'arn splits again. There will be three Tel'arns with a shared health pool.
• All abilities from Stage One and Two continue.
• start to spawn at player locations and persist for 2 minutes. Running into a spore will cause it to burst and deal damage.
• marks several players for 30 seconds. The marked players need to move within 5 yards of an unmarked player, and away from other marked players or the raid will take ticking arcane damage.

 DPS Strategy

• Switch to Parasitic Lasher immediately. If you are fixated, don't get hit by it.
• Move away from .
• Run through the ring of as soon as it spawns.
• Damage the Plasma Spheres in order, according to your raid leader. Don't even look at a sphere out of order.
• Avoid .
• When marked with , find an unmarked player to stand with, and stay away from other marked players.
• Before actually doing the fight, I can only predict the best timing for strong DPS cooldowns like Heroism/Bloodlust/Time Warp. If your entire raid can make it to Stage Three, I would recommend saving cooldowns for the start of this phase when all three bosses are up and can be cleaved together.

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