Abyssal — guide

In short

Abyssal is a Rare Spirit Support from the Demons faction: a healer restoring 15% of each ally's max HP, a one-button source of DEF Up 30% and ATK Up 25% for the whole team, and an A1 that hits every enemy with a chance to land Block Buffs. He performs best in Hydra and Faction Wars, but the site's verdict is vault/fusion material — build him only if you need a Demons FW healer.

Strengths

• The only Rare healer in Demons — fills a genuine gap in Faction Wars.
• Guardians of Madness hands the entire team DEF Up 30% and ATK Up 25% for 2 turns from a single cast.
• A1 hits all enemies and has a 15% chance to place Block Buffs — relevant against Hydra and buff-heavy waves.
• The heal scales off max HP, so a tanky build also boosts his healing output.
• 16% SPD aura in Faction Crypts.

Weaknesses

• Thin base stats: 95 SPD, 991 DEF, 815 ATK.
• Long cooldowns: 6 turns on A3 and 4 turns on A2 before books.
• No innate ACC and only a 15% chance — Block Buffs will rarely land without investment.
• Damage is ATK-based at 2.8x with 815 ATK, so it is effectively negligible.
• Rated 1.0 in Clan Boss and Chimera.

Where to use

Hydra first (3.0): Block Buffs denial plus a full stack of team buffs. Next, Faction Wars (2.5) — the SPD aura and heal for Demons. Arena, Dungeons and Doom Tower (2.0) only as a budget buffer early on. He is also a fine Campaign pick on Hard 2-4 for levelling Rare Spirit champions. Skip Clan Boss and Chimera entirely.

Stats and gear

Priority: SPD → HP% → DEF% → ACC. Rough targets: 170–200 SPD, 40–50k HP, 2000+ DEF, and 100–150 ACC if you actually want Block Buffs to stick in Hydra. Ignore C.RATE and C.DMG. Sets: Speed, Immortal, and Perception if you are short on accuracy. From the relic list, Gilded Dragonstone and Orb of Transfixion.

Masteries and blessings

Support tree: Invigorated, Strengthening Will and Targetfinder — survivability, resistance and the accuracy needed for his debuff. Round it out with standard defensive picks in the second tree. For blessings, take something survivability/regen-oriented if you genuinely field him in Crypts.

Tomes

If you keep him for Crypts, book Guardians of Madness first: the two cooldown levels cut it from 6 turns to 4, the biggest gain available. Then Pugna (4 → 3 turns). If he is going into a fusion, spend no tomes at all.

Verdict

Vault — fusion material. Keep one copy only if Demons Faction Wars has no healer; otherwise he is food.