Genshin Mona Build & Teams: 5-Star Hydro Catalyst & Omen Damage Amp
Quick Answer
- Mona is a 5★ Hydro catalyst (Mondstadt astrologer), a Support / Sub-DPS; her signature mechanic is the Omen damage-amp debuff.
- Core set: Noblesse Oblige 4pc (+20% team ATK after the Burst) or Emblem of Severed Fate 4pc (ER + Burst DMG, when recharge is short).
- Main stats: ER Sands / Hydro or ATK Goblet / Crit Circlet.
- Sub-stats: ER > Crits > ATK (on-field ~150-180% ER; off-field catching own particles ~230-300%).
- Key: Skill applies Hydro + taunts; Burst (Illusory Torrent) traps enemies and applies Omen; Freeze extends the Omen window; A4 converts ER into Hydro DMG.
- Best teams: Mona + Ganyu/Yun Jin + Xingqiu (Freeze); Mona + Hu Tao/Yoimiya + Bennett + Xiangling (Vaporize).
- Weapon: Thrilling Tales of Dragon Slayers (3★ support T0, +24% ATK on the next character, +48% at R5).
How Mona Works
Mona is a classic "Burst damage-amplifier support":
- Omen: her Burst traps enemies and applies Omen, increasing the damage they take (scales with Burst talent), lasting up to 5s; Freeze extends the Omen window.
- Phantom: her Skill spawns a decoy that taunts and applies Hydro, exploding when it expires or is destroyed.
- A4: converts 20% of your Energy Recharge into Hydro DMG — so ER is a core sub-stat, not wasted on her.
Artifacts
| Set | 2pc | 4pc |
| Noblesse Oblige | +20% Burst DMG | +20% team ATK after the Burst — best-in-slot for support |
| Emblem of Severed Fate | +20% ER | Burst DMG bonus based on ER — when recharge is short or running her as a sub-DPS |
| Tenacity of the Millelith | +15% ATK | team ATK + shield strength on Skill hit — shield teams |
Main & Sub Stats
| Slot | Main Stat |
| Sands | Energy Recharge (primary) / ATK% (A4 output build) |
| Goblet | Hydro DMG Bonus / ATK% |
| Circlet | Crit Rate / Crit DMG |
Sub-stat priority: ER > Crits > ATK. On-field ~150-180% ER; off-field catching her own particles ~230-300%.
Weapons
| Weapon | Rarity | Notes |
| Thrilling Tales of Dragon Slayers | 3★ | Support T0; +24% ATK to the next character (+48% at R5), cheap and easy to max |
| Favonius Codex | 4★ | ER substat; smooths the whole team's energy cycle |
| Goldendew | 4★ | HP substat + healing — adds a healer slot |
| Skyward Atlas | 5★ | Output-oriented; ATK substat + passive |
Team Comps
Freeze Team (most common)
Mona + Ganyu/Yun Jin + Xingqiu + Diona/Baizhu
- Mona applies Hydro + the Cryo user applies Cryo → Freeze; the Freeze extends the Omen window, so the carry eats the full buff.
- Ganyu/Yun Jin carry; Xingqiu adds Hydro uptime; Diona/Baizhu add shred + damage reduction.
Vaporize Nuke Team
Mona + Hu Tao/Yoimiya + Bennett + Xiangling
- Mona applies Hydro and buffs; Bennett provides Pyro + healing; Hu Tao / Yoimiya nuke with Vaporize.
Constellation Priority
- C1: +15% Hydro-based reaction damage on Omen-marked targets (the Freeze/Vaporize game-changer, highest value).
- C2: chance to auto-Charged Attack, plus an auto-Charged Attack after the Burst that grants the whole team +80 Elemental Mastery.
- C4: +15% Crit Rate on Omen-marked targets (a rare team-wide Crit buff).
Related Guides
FAQ
What artifacts does Mona use?
For support, run Noblesse Oblige 4pc (team ATK); when recharge is short or as a sub-DPS, run Emblem of Severed Fate 4pc; ER Sands + Hydro/ATK Goblet + Crit Circlet.
No signature weapon — what next?
Mona has no 5-star signature. The 3-star Thrilling Tales of Dragon Slayers is her T0 support pick (ATK to the next character); Favonius Codex for ER; Goldendew to add a healer.
Who should team with Mona?
Freeze (Ganyu / Yun Jin + Xingqiu) is the most stable; Vaporize (Hu Tao / Yoimiya + Bennett + Xiangling) hits harder.
How much ER does Mona need?
On-field ~150-180%; off-field catching her own particles ~230-300%. Favonius Codex, Noblesse or Emblem ease the requirement.
Which Mona constellation matters most?
C1 (+15% Hydro reaction damage) is the most valuable — target it for Freeze/Vaporize teams; C4 (team-wide Crit) is also worth having.
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