Priest

This is the pure support route built around high INT and heavy VIT, then rounded out with some DEX or LUK depending on how much cast smoothness or resist coverage you want. The goal is simple: stay alive, keep buffs up, and stabilize the party with Kyrie Eleison, Resurrection, Magnificat, and Lex Aeterna. AoY's longer buff windows help this route a lot because Magnificat lasts 2.5 minutes, while inherited Angelus and Aspersio both stay up for 5 minutes.

Full Support is strongest in parties and remains the cleanest long-term route if your goal is High Priest support play. It is still capable of solo undead leveling, but it shines most when your value comes from healing, protection, and buff coverage rather than personal damage.

This route trades some pure support ceiling for a much easier early solo game. Higher AGI, moderate VIT, strong INT, and enough DEX let you self-buff, quest, and grind much more comfortably while still supporting smaller groups. It pairs well with Impositio Manus, Aspersio, and your existing Acolyte buff core. On AoY, Impositio Manus affects the whole party and Aspersio lasts 5 minutes, so this hybrid route supports small groups better than old iRO expectations.

If you expect to party regularly but still want to handle your own leveling windows, this is the most comfortable all-purpose Priest stat spread before eventually narrowing into a more specialized High Priest path.

TU Priest is one of the most popular solo leveling routes because its stats overlap well with support while still giving you real kill pressure on undead targets. High INT, healthy DEX, solid VIT, and some LUK make Turn Undead more reliable, while Gloria helps smooth that success rate further.

This is a strong bridge build if you still want party utility but also want to level efficiently through undead-heavy zones like Wraith, Evil Druid, and Anubis.

ME Priest leans into the class's strongest area-damage option by stacking INT for MATK, DEX for cast time, and enough VIT to not collapse while setting up. The class relies heavily on Magnus Exorcismus supported by Kyrie Eleison and its Turn Undead prerequisite.

AoY's Game Changes page and live tooltip both say that ME hits all monster races here, not just Undead and Demon, so this route is no longer locked to the classic niche it had on iRO. It is still the most specialized solo farming route on the class, but it is also the most demanding to execute well because it cares much more about cast setup, positioning, and survival windows than the TU route.