Sachi — guide

In short

Sachi is an Epic Support Shadowkin of the Force affinity: she hits all enemies, spreads Decrease ACC, Decrease C.RATE and Parasite, and her A3 hands the team Increase ATK 50 % with a turn-meter fill on crit. She shines in Clan Boss and Faction Wars. Build priority is low — the site author's verdict is simply "vault (fusion)".

Strengths

• A3 "Shadow Strike" gives the whole team Increase ATK 50 % for 2 turns and, on a critical hit, fills 20 % of the team's turn meter — a genuine support package for Clan Boss.
• A1 "Scythe Strike" hits all enemies and has up to a 50 % chance (fully booked) to land Decrease ACC 50 % for 2 turns.
• A2 "Heart Piercer" has a 75 % chance (100 % booked) to place Decrease C.RATE 30 % and Parasite for 2 turns — it shuts down crit-reliant bosses.
• Passive "False Death" revives a random ally with 30 % HP whenever she lands the killing blow, and on revival has a 50 % chance to place Fear on all enemies for 1 turn.
• Faction Wars is her home turf (4.0/5): Epic, Force affinity, cheap to book and gear for a faction team.

Weaknesses

• Her kit scales on ATK while base HP/DEF are low (14,865 / 1,090), so she folds under focused damage.
• The passive revive only triggers if she personally gets the kill — unrealistic against bosses.
• A2 and A3 are single-target and her own damage is nothing special; everything rests on debuffs and Increase ATK uptime.
• Weak spots: Hard mode 2.0/5, dungeons and Doom Tower 3.0/5.

Where to use

Clan Boss first (4.0/5): Increase ATK, Decrease ACC and Parasite all pull weight there. Faction Wars is next (4.0/5) and is her real purpose. Hydra, Chimera and Arena sit at 3.5/5 — usable, not exciting. Dungeons and Doom Tower are 3.0/5, easily replaced. Skip Hard mode (2.0/5).

Stats and gear

Priority: SPD → ACC → C.RATE → survivability. Rough targets: SPD 200+ (230+ for Clan Boss), ACC 250+ for Clan Boss/Hydra, C.RATE 70–100 % so A3 crits reliably and actually fills the team's turn meter, HP 35–45k, DEF 2000+. Sets: Speed, Perception, Accuracy, plus Immortal/HP for bulk. From the build sheet, the relics are Journal of Necrotos and Orb of Transfixion.

Masteries and blessings

The build lists Invigorated and Targetfinder — take those. Put the main tree into Support for accuracy and debuff reliability; if you field her in Clan Boss, finish Offense with Warmaster or Giant Slayer for damage procs. No blessing is locked in by the build: pick a defensive or accuracy-oriented one, since she brings no damage of her own.

Tombs

Book A3 first: two tomes cut the cooldown from 5 to 3 turns, which directly raises the team's Increase ATK uptime. Then finish A2 for the 100 % debuff chance and the extra cooldown reduction. A1 comes last — it only adds to the Decrease ACC chance.

Verdict

Keep her for fusion and only invest for Faction Wars: as a general-purpose pick she is narrow, but a free revive plus team Increase ATK earns her slot in faction content.