Oella — guide

In short

Oella is a Legendary Magic Support from the Sylvan Watchers: team-wide heal for 30% of MAX HP, buff extension, Turn Meter fill and a Resistance buff. She shines in Hydra (5/5) and Faction Wars (4.5/5) and is a solid all-rounder everywhere else. Build priority is Speed and survivability — she is not a damage dealer.

Strengths

• Morphosis fills all allies' Turn Meters by 30% and places a 50% Resistance buff for 2 turns — one of the best defensive tools against debuff-heavy enemies.
• Spring Bloom heals the whole team for 30% of their MAX HP and extends every buff by 1 turn; with books its cooldown drops to 3 turns.
• The Unstoppable passive gives a free 15% Regen to any ally who loses 15%+ MAX HP from a single hit — great insurance in long fights.
• Dungeon aura (+75 to an ally stat) on top of a healthy 21,135 HP at 6★.
• With Ultan the Scaled on the team, her A1 Speed debuff cannot be reflected and the passive Regen lasts 2 turns and activates instantly.

Weaknesses

• 110 base Speed and 1,189 Defense — slow and fragile until you gear her.
• Damage scales off ATK, and her ATK is only 980: the A1 is there for the Speed debuff, nothing else.
• Only 3/5 in Hard mode and Doom Tower, where other champions do the job better.
• Her heal is a percentage of each ally's MAX HP, so it does little for squishy low-HP targets.

Where to use

Hydra first (5/5) — her heal, buff extension and Turn Meter fill carry there. Then Faction Wars (4.5/5), followed by Clan Boss, Chimera, Classic and Tag Team Arena and Dungeons at 4/5. In Hard mode and Doom Tower (3/5) slot her only for specific floors.

Stats and gear

Stack Speed and bulk: SPD 220+ (250+ in Hydra), HP 60–70k, DEF 2,500–3,000, RES 200+ (her Resistance buff stacks with it), ACC 100–150 only if you want the A1 Speed debuff to land reliably. Ignore C.RATE and C.DMG. Sets: Speed, Divine Speed, Swift Parry, Bolster, Stalwart, Relentless, Defiant.

Masteries and blessings

Support tree: Blessed Heal, Invigorated, Heal 'N' Go — all in on healing and cooldown cycling. Defense tree: Bolstered Defense. Keep a separate PvP setup for arena defense. Blessings: Miracle Heal as the default, Heavencast, Polymorph for PvP, Brimstone if you want a bit of chip damage. Relics: Journal of Necrotos, Hallowed Hilt, Perched Shadow.

Tomes

Book Morphosis first: each book cuts 1 turn of cooldown (6 → 3), the biggest single upgrade for the team. Then Spring Bloom (extra healing plus −1 turn cooldown). Leave the A1 for last — its books only add debuff chance.

Verdict

Oella is the support that carries without dealing damage — level her up, prioritising Speed and Morphosis cooldown.