Summary
The Elder Scrolls Online Update 51 introduces two new Monster Sets specifically tied to its new Solo Dungeon content: Mylenne Moon-Caller and Tarcyr. One focuses on Bleed damage, Stamina sustain, and Werewolf synergy, while the other provides passive crowd control and defensive utility.
The two sets are designed as exclusive rewards for the new Solo Dungeon versions of Moon Hunter Keep and March of Sacrifices, giving solo players new Monster Set options without replacing the existing group-dungeon loot. To prepare, buy The Elder Scrolls Online Items and get the consumables and gear you need to optimize your build for the new solo challenges.
ESO Update 51 Adds Two Solo Dungeon Monster Sets
Update 51's new Solo Dungeons allow players to tackle Moon Hunter Keep and March of Sacrifices alone, either without assistance or with an NPC Companion. Players can also select up to three Meted Misfortunes to increase difficulty and rewards. The three levels range from roughly overland difficulty to challenges harder than comparable solo content.
These Solo Dungeons award the new Mylenne Moon-Caller and Tarcyr sets, along with their corresponding Style Pages. The existing Monster Sets associated with the group versions remain separate, meaning the Solo Dungeon versions are not a shortcut to the traditional group-dungeon sets.
Mylenne Moon-Caller Comes From Solo Moon Hunter Keep
Mylenne Moon-Caller is the offensive option, built around Bleed damage, sustain, and Werewolf gameplay.
Its one-piece bonus grants 129 Weapon and Spell Damage. The two-piece effect activates when you deal direct damage with a Class ability or Werewolf attack, dealing 912 Bleed damage to enemies within 8 meters of the target. It restores 10% of the damage dealt as Stamina, has a 10-second cooldown, and can deal up to 100% additional damage against monsters depending on how full your Stamina is. Werewolves also gain 15 Fury and 1 Blood Hunger when the effect activates.
That combination makes Mylenne Moon-Caller particularly attractive for solo PvE DPS, where both additional damage and resource sustain can have a noticeable impact.
Mylenne Moon-Caller's PTS Changes Make It More Focused
The set was changed during Update 51 testing. Its trigger was tightened from a broader damage-based condition to direct damage from Class abilities or Werewolf attacks. The stated goal was to reduce its passive nature, particularly in PvP.
At the same time, its base damage was increased by 16%, it gained the Stamina-based bonus damage against monsters, and issues involving its Stamina restoration were fixed.
The result is a more deliberate PvE-oriented proc. Players now need to actively trigger it through the appropriate abilities, but the reward is stronger damage potential against monsters.
For Werewolf builds, the additional Fury and Blood Hunger make the set especially appealing. However, its trigger is not restricted to Werewolves, so other solo builds that regularly deal direct Class Ability damage can also make use of it.
Tarcyr Focuses on Passive Defense
Tarcyr takes a completely different approach. Instead of adding a major offensive proc, it provides Maximum Health and automatic crowd control.
Its one-piece bonus adds 1,206 Maximum Health. When Battle Spirit is inactive, taking direct damage causes the attacker to cower in Fear for 2 seconds. Enemies that cannot be Feared instead receive Major Cowardice for 3 seconds, reducing their Weapon and Spell Damage by 430. The effect can occur every 0.5 seconds.
Tarcyr Could Be a Sleeper Pick for Solo Tanks
Tarcyr's main strength is that its defensive value happens automatically when enemies hit you. Against trash packs, repeated Fear effects can create breathing room, while enemies immune to Fear can have their damage reduced through Major Cowardice.
The set's PTS changes also pushed it toward more consistent application. The duration of Major Cowardice was reduced from four seconds to three, but the per-target cooldown was removed.
That makes Tarcyr an interesting option for players building safer Solo Tank or tanky Solo setups. It could reduce the need for additional defensive button presses while still providing useful control.
However, it is less convincing as a conventional group-tank Monster Set. Its real value will depend on how effectively it can be combined with other defensive or offensive sets in actual Solo Dungeon encounters.
Which Update 51 Monster Set Is Better?
For most players looking for a Solo DPS Monster Set, Mylenne Moon-Caller is the more immediately compelling choice.
Its 129 Weapon and Spell Damage, 912 Bleed proc, Stamina restoration, and up to 100% increased damage against monsters give it a clear offensive identity. Werewolf builds have an additional reason to use it, but the set is not exclusively designed for Werewolves.
Tarcyr is more specialized. Its 1,206 Health and recurring Fear or Major Cowardice effects are aimed at making difficult solo encounters safer rather than maximizing damage. It may become a sleeper choice for players who prefer defensive Solo builds, but its strongest combinations will likely require more testing.
Neither set is guaranteed to replace established craftable, dungeon, or trial options. Their biggest advantage is accessibility through the new Solo Dungeon system, especially for players who do not want to rely on four-player dungeons or trials for their Monster Set options.
Update 51 Establishes a Separate Solo Loot Identity
The most important broader change is that Solo Dungeons now have their own Monster Sets and Style Pages, rather than simply reproducing the rewards from their group counterparts. Official PTS notes confirm that the new Solo Dungeons award Tarcyr and Mylenne Moon-Caller, while existing group-dungeon rewards remain tied to their respective content.
That gives Update 51's Solo Dungeons a distinct progression path. For players primarily interested in solo PvE, Mylenne Moon-Caller is the set to watch for damage, while Tarcyr offers the more defensive and experimental option.
With both sets now part of the Solo Dungeon reward structure, Update 51 could also establish a new model for future solo-focused dungeon rewards.
Which ESO Update 51 Monster Set Should You Farm?
For most solo DPS players, Mylenne Moon-Caller is the clear first choice.
Its 129 Weapon and Spell Damage, AoE Bleed, Stamina restoration, and up to 100% increased damage against monsters give it a much more immediately useful offensive profile. Werewolf builds are the obvious beneficiaries, but other solo PvE builds may also find ways to trigger the effect consistently.
Tarcyr is more specialized. Players who prioritize survivability, passive crowd control, or safer solo clears may find it valuable, particularly on defensive builds. It could also become a sleeper option once players discover effective combinations with other gear.
Neither set should automatically be considered the new universal meta choice, however. ESO already has numerous powerful craftable, dungeon, and trial sets, so real-world testing will determine whether these new monster sets outperform established alternatives.
Final Verdict
Mylenne Moon-Caller currently looks like the most exciting Update 51 solo monster set, particularly for Werewolf players and solo PvE DPS builds. Its PTS changes have strengthened its damage potential while giving it a clearer trigger condition.
Tarcyr is the more experimental option. Its health bonus and frequent Fear or Major Cowardice effects could make difficult solo encounters considerably safer, but its best build combinations will likely require further testing.
With Update 51 establishing exclusive rewards for solo dungeons, both sets are worth farming if you regularly play solo. For players chasing damage, start with Mylenne Moon-Caller; for players who value control and survivability, keep Tarcyr on the shortlist. To gear up faster, The Elder Scrolls Online Items can help optimize your solo dungeon build.
