Quick Answer
Guildrun Duelist's Outbreak Banner is a relic for a Duelist team that can place multiple Debuff types on the target. In Demo 0.5.5, the official notes redesigned it so a Duelist auto attack deals 15 bonus damage per type of Debuff on the target. The redesign followed a developer note that the old relic was outperforming other Guild Banner choices, so older Outbreak recommendations should not be copied.
Pick Outbreak Banner when the team can reliably apply different Debuffs and has a Duelist who attacks often. It is not a free damage increase for every board: a single status type, slow attacks, or a target that dies before the interaction matters can reduce its practical value.
The Current Effect
The official 0.5.5 text is the source of truth: whenever a Duelist auto attacks, they deal 15 bonus damage per type of Debuff on the target. The important unit is Debuff type, not an invented total number of stacks. The full list of which effects count and how the current game displays them is To be confirmed unless checked in the live demo.
This distinction prevents a common mistake. A guide should not multiply 15 by every application of the same Debuff and call the result official. It should explain the confirmed per-type rule and tell the reader to inspect the target's current Debuff icons.
Who Uses It
Nyx The Wild is a natural page to link because the specialization benefits from fast attacks, while a broader Duelist team can also use the banner. That is a relationship, not a promise that Nyx is the only or best holder. The best user depends on attack frequency, Debuff access, protection, and the rest of the Guild Banner pool.
Use the Nyx The Wild guide for a personal carry route and the Guildrun relics guide for the larger question of whether the team already has a coherent status engine. Do not recommend Outbreak solely because a hero has the Duelist class.
Debuff Types Versus Debuff Counts
The official wording says “per type of Debuff.” That means the page should keep type and count separate. If the target has several applications of one status, the public note does not say that they count as several types.
The exact set of statuses that qualify is not enumerated in the public patch note. Treat an unlisted interaction as To be confirmed, especially when a community database or screenshot uses different naming. This is also why the page should link to current patch notes rather than rely on a static table.
Event and Timing Context
Outbreak Banner is part of the Guild Banner relic group in the official patch notes. The complete event choice tree, appearance conditions, and alternatives are not published on the official store page. Costs, shop odds, and the exact event sequence are To be confirmed.
When the relic appears, compare it with the immediate board. A banner that needs several Debuff types may be weaker than a simpler defensive relic if the next fight is dangerous. If the board already applies status effects and the Duelist attacks consistently, the redesigned wording makes the choice more compelling.
Patch History
Before Demo 0.5.5, the old Outbreak design had a different effect and was described by the developer as a major outlier in win rate. The current page should preserve that as history, not present it as a build instruction. The 0.5.5 redesign is the current confirmed effect in the public material.
Future balance changes may alter the 15 bonus damage, the qualifying Debuff types, or the banner's relative value. Use the Guildrun patch notes before publishing a new tier claim. The full release is still To be announced, so demo balance should not be written as final game design.
Common Mistakes
Do not confuse Outbreak Banner with a general Duelist damage relic. Do not assume one Debuff repeated many times equals many Debuff types. Do not build a full team around a banner before checking that the board can apply status effects and keep its Duelist attacking.
Do not use a past tier list without its version. The old effect was explicitly redesigned, which makes version labels essential for this item page and for every article that links to it.
Current Verdict
Guildrun Duelist's Outbreak Banner is a current Debuff-synergy relic: each Duelist auto attack receives 15 bonus damage per Debuff type on the target under the Demo 0.5.5 wording. It is worth considering when the team already has multiple reliable status types and fast attacks, but unlisted interactions, event details, and universal rankings remain To be confirmed.