Dreadsail Reef Normal Overview

Dreadsail Reef is the second trial in the Scalecaller Peak vault, released as part of the 2025 Update 37 cycle. It runs 12 players across three bosses: Trencher Thyme, Morkul Bloodreaver, and Queen Arannerya. Normal mode means no hard modes, no additional mechanics on top, and you can use the standard trial difficulty modifiers if you want them. The vault is on the western coast of Blackwood, near the Dreadsail Islands. Here is how you actually run it without dying repeatedly. The pull path matters more than most people admit. Start by clearing the mobs between the entrance and Trencher Thyme's room. There are roughly six groups, mostly Dreadsail Corsairs and a few Harborage cultists. You do not need to clear every single mob, but leaving five or more alive before the first boss pull will significantly slow your pull because they path back to their groups and aggro on the way. I used to just wing it and pull first group, then slowly move forward. Took us maybe 45 minutes just to reach the first boss. Now I run through with the group, only pulling mobs that are directly in the path, and we reach Thyme in about eight minutes total including the boss fight.

Trencher Thyme

This is a straightforward DPS check with a cleanup mechanic. Trencher Thyme casts Shallow Breath periodically, which puts a debuff on the tank called Air Hunger. When it stacks too high, the tank gets one-shot. You rotate tanks every two to three casts. That part is basic. The thing people mess up is the Ambush Pods. They spawn from the edges of the room and have a telegraphed charge that one-shots anything it hits. In normal mode, there are four pods at any given time. The standard approach is to have two dps stand on each side of the arena to kite the pods toward the walls where they despawn faster. Do not let them cluster in the middle, because if three or more land on the same spot the AoE stack does serious damage to anyone standing there. I ran into a specific problem once where our group kept having one pod refuse to despawn even after it hit the wall. Turns out the pod only despawns when it takes enough knockback from hitting the arena geometry, and if it phases through a corner gap it would just loop back into the center. We found the corner between the eastern wall and the northern ramp has a slightly wider gap than the others, causing the pod to get stuck in a short pathing loop instead of despawning. Workaround was to manually pull it with a CC ability toward the flat section of the wall rather than the corner, and it despawned normally. Once we communicated which wall section to use, the issue disappeared completely.

Thyme's cleave is wide, so position him facing away from the dps cluster. His enrage timer is roughly four minutes on normal, so you have some breathing room but not unlimited time. Heals through his adds quickly if you let them stack up. Kill the two Minion of the Trench adds within ten seconds of spawn.

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Trash Fights in Dreadsail Reef | Complete Dreadsail Reef Guide for ESO ...
Trash Fights in Dreadsail Reef | Complete Dreadsail Reef Guide for ESO ...

Morkul Bloodreaver

This boss introduces the Coral Crush mechanic. Morkul smashes the ground periodically, creating ring-shaped telegraphs that push players outward. The rings appear at set intervals, usually every 20 to 25 seconds, and they alternate between inner and outer rings. Stand still during a ring and you get launched into the next set of telegraphs. Move toward the center when you see one coming. What nobody tells you about this fight is that the pushback from Coral Crush can displace you off the safe platform. There is a thin ledge area around the outer edge where the telegraphs overlap with the environmental drop-off. If you get pushed there, you fall into the water and take damage. The fix is simple: during Coral Crush phases, everyone should stay at least three meters inside the platform edge. Not two meters. Three. You can see the safe zone by looking at where the water texture changes color slightly darker than the dry platform. Morkul also calls Wave Callers as adds. These cast a channelled heal on him that lasts about eight seconds. Two wave callers spawn per cycle, and there are two cycles per enrage window. You need at least one person dedicated to dropping them before they finish their channel. DPS check on the adds is roughly 25k each on normal. If you let one finish the channel, Morkul gains a damage reduction buff that lasts 15 seconds and heals him for about 8% of his maximum health. That is a significant time cost you do not have with a four-minute enrage.

Tank rotation here is every two hits because Morkul applies a stacking bleed that makes the next hit do significantly more damage. Swap at stack three. His melee range is about 4 meters, so standard tank positioning applies.

Queen Arannerya

The final boss has three distinct phases that scale in complexity. Phase one is mostly a DPS check with occasional Tidal Wave telegraphs that span the arena width. Spread out during those, because the Wave creates a lingering water pool that slows movement speed by 40% and does minor damage over six seconds. Standing in two pools at once makes you nearly immobile, which is how people die in phase one. Phase two triggers at 70% health and introduces Siren's Lament. Arannerya channels this for three seconds, placing a circular telegraph under each player. If a telegraph overlaps with another player's telegraph, both take heavy magic damage and get a stacked vulnerability debuff. The pattern is predictable once you learn it: she always targets the three closest players to her first, then the next three. DPS should cluster in a group of three, tanks together, and healers together. The healers often end up isolated because they spread for group heals. Move them into the dps cluster during Siren's Lament windows. This cut our wipe rate on this mechanic from roughly once per three attempts to zero in one attempt after we started doing it. Phase three at 40% health adds Abyssal Tendrils that spawn at the four cardinal points of the arena. Each tendril has 15% of Arannerya's maximum health and casts a slow channel. You need one person per tendril, or two if your group's dmg per second is on the lower side. The tendril damage is physical and stacks additively, so getting hit by two different tendrils simultaneously will kill most characters in under two seconds. Do not try to multitask tendril cleanup while also handling Tidal Wave telegraphs. Prioritize the tendril.

Trash Fights in Dreadsail Reef | Complete Dreadsail Reef Guide for ESO ...
Trash Fights in Dreadsail Reef | Complete Dreadsail Reef Guide for ESO ...

Arannerya's enrage is approximately four and a half minutes. On normal mode, the overall encounter should take between 12 and 16 minutes depending on your group's familiarity. First runs typically take 20 to 25 minutes. The biggest bottleneck is almost always the add management on Morkul, not the boss DPS checks.

Practical Tips

Bring at least one dispel for the Air Hunger debuff from Thyme. Having a second dispel available as backup prevented an entire wipe for me once when the primary dispeller misclicked. Bring crowd control for the Ambush Pods if you are short on kiting assignments. A single CC chain on a pod can buy enough time for it to despawn naturally, which frees up a kiter for another pod. The loot table drops gear in the 425 to 444 item style range on normal. You get one chest per boss plus a final chest after Arannerya. The best drops are typically the weapon and necklace slots for this trial. Set drops include the Tidal Caller set, which focuses on healing potency and spell critical. If you are running healers, the set is solid but not mandatory. If you are doing this for loot before completing veteran, know that the item styles will be lower than veteran drops and may require upgrading through deconstruction or the crafting system. One thing that catches groups off guard: the vault before Dreadsail Reef, Scalecaller Peak normal, has a separate loot table. Completing Dreadsail Reef does not give you vault rewards. If you need those, run the previous trial first. I learned this the hard way after spending an hour on Dreadsail Reef thinking I was progressing through the vault chain properly.

When Normal Mode Falls Short

Normal mode works fine for learning the encounters and casual gear progression. It breaks down if you are trying to complete the full vault challenge on a tight schedule, because the enrage timers are loose and deaths do not carry over penalty weight the way they do in veteran. If your goal is speed clearing or achievement hunting, veteran is the only mode that matters. Normal is useful for practice runs where you need to die without losing a day's worth of progress, but do not treat it as the end state for any serious gearing plan. If your group consistently struggles past 80% on Arannerya, the issue is almost never individual DPS. It is usually phase two telegraph positioning or tendril assignment. Fix those two things before considering a DPS buff or rerolling anyone.

Trash Fights in Dreadsail Reef | Complete Dreadsail Reef Guide for ESO ...
Trash Fights in Dreadsail Reef | Complete Dreadsail Reef Guide for ESO ...