Mona excels at applying Hydro off-field via her burst and providing a significant damage buff through the Omen debuff that amplifies team damage. Pair her with a main DPS that can trigger Vaporize or Freeze reactions (such as Pyro or Cryo carries) to maximize her utility. Build her with high Energy Recharge and Hydro Damage for consistent burst uptime, prioritizing personal damage output as secondary since her primary value lies in enabling and buffing teammates.