Frostfall Sickle

Max-level stats (Lv60)

ATK (Lv.60)

713

Anomaly Mastery (Lv.60)

30%

Rank

S

W-Engine effect

Rank SAnomaly

Terminating Verdict

When an Ice attribute equipper uses a Special Attack or EX Special Attack, their Ice DMG is increased by 20% for 40s, stacking up to 2 times, once per use of a skill. Repeated triggers refresh the duration. At 2 stacks, the equipper's Abloom DMG dealt is increased by an additional 35%. *Stats shown are at Base level.

Overclock Table (★1 → ★5)

Official values straight from the publisher — every duplicate copy Overclocks the passive by one star, capped at ★5.

Upgrade	★☆☆☆☆	★★☆☆☆	★★★☆☆	★★★★☆	★★★★★
Ice DMG increases	20%	23%	26%	29%	32%
Abloom DMG dealt increases additionally (At 2 stacks)	35%	38.5%	42%	45.5%	50%

Materials & Stats per Breakthrough Milestone (0 → 60)

The full ATK/sub-stat curve across all 7 milestones plus the materials each one costs, read straight from official data.

Lv.	Before	After	Material
Lv.0	ATK: - Anomaly Mastery: -	ATK: 48 Anomaly Mastery: 12%
Lv.10	ATK: 123 Anomaly Mastery: 12%	ATK: 166 Anomaly Mastery: 15.6%	Denny ×12,000 Anomaly Component ×4
Lv.20	ATK: 241 Anomaly Mastery: 15.6%	ATK: 284 Anomaly Mastery: 19.2%	Denny ×28,000 Reinforced Anomaly Component ×12
Lv.30	ATK: 359 Anomaly Mastery: 19.2%	ATK: 402 Anomaly Mastery: 22.8%	Denny ×60,000 Reinforced Anomaly Component ×20
Lv.40	ATK: 477 Anomaly Mastery: 22.8%	ATK: 520 Anomaly Mastery: 26.4%	Denny ×100,000 Specialized Anomaly Component ×10
Lv.50	ATK: 595 Anomaly Mastery: 26.4%	ATK: 638 Anomaly Mastery: 30%	Denny ×200,000 Specialized Anomaly Component ×20
Lv.60	ATK: - Anomaly Mastery: -	ATK: 713 Anomaly Mastery: 30%

Total materials for the full 0→60 climb

Denny ×400,000 Anomaly Component ×4 Reinforced Anomaly Component ×32 Specialized Anomaly Component ×30

Where To Farm

Combat Simulation — each Enemy Card costs 20 Battery, up to 5 cards per run (100 Battery for a full run).

Signature Holder

Frostfall Sickle's exclusive signal W-Engine — equip it on the matching Agent to unlock the signature outfit.

Promeia

Best Agents for this W-Engine

Recommended for

S

Promeia S+

How to Get This W-Engine

Pull it from Signal Search using Master Tapes / Encrypted Master Tapes (bought with Polychrome) — S-rank W-Engines get their own banner, usually alongside the matching character's banner.

Trade for it at the Gadget Shop's Box Galaxy section (Sixth Street): costs W-Engine Components + W-Engine Chips + Denny; Chips come from disassembling spare W-Engines.

A handful of A/B-rank W-Engines unlock through Proxy Primer trials or as story/event rewards instead of the gacha — not every W-Engine is pullable.

Compare with Same-Specialty Picks

Other Anomaly-specialty W-Engines, sorted by rank — solid stand-ins while you don't have the signature.

W-Engines	Rank	Base ATK (Lv.60)
Frostfall Sickle	S	713
Ode of Resurrected Wings	S	—
Joyau Dore	S	713
Angel in the Shell	S	713
Practiced Perfection	S	713
Flight of Fancy	S	713
Sharpened Stinger	S	713

Official Artwork / Lore

Clutching a wavering ideal. Running and shouting across the barren red earth, then falling into sleep, only to wake up grown. Choosing chains of one's own making. Living on as a blade, scraping by. Investigating, interrogating, hunting... endless, numb, cold. Waiting for the promised judgment. Plucking a rotting new bud and stepping into winter, until at last welcoming life's final hope... death, warm and peaceful.

Alternatives of the same specialty

Anomaly specialty — decent picks while you don't have this one

S

Ode of Resurrected Wings

Joyau Dore

Angel in the Shell

Flight of Fancy

How to read this W-Engine page

Every W-Engine has 5 Refinement ranks (R1→R5): refinement ONLY strengthens the passive effect — the numbers in the table above run from left (R1, unrefined) to right (R5, max refinement via 4 duplicates or Overclock materials); Base ATK and the Advanced Stat (CRIT Rate/CRIT DMG/ATK%/PEN Ratio/Anomaly Proficiency...) do NOT change with refinement, only with the engine's level. "Best Agents for this W-Engine" prioritizes agents whose real build actually recommends this engine; if that data isn't available yet, the page falls back to agents sharing the same specialty as a rough guide. "Alternatives of the same specialty" lists other W-Engines with the same role — useful when you don't own the engine shown on this page.

FAQ

What is Frostfall Sickle in Zenless Zone Zero?

Frostfall Sickle is a rank S W-Engine built for the Anomaly specialty in Zenless Zone Zero — equip it on an Agent of the matching specialty to unlock the full passive effect; see the base stats and the full R1→R5 Refinement table in the sections above.

Which Agents should use Frostfall Sickle?

Frostfall Sickle fits Anomaly specialty Agents best, with 1 recommended characters including Promeia — see the full list with portraits in the "Best Agents for this W-Engine" section above.

How much Denny and material does it take to upgrade Frostfall Sickle, and where do I farm it?

Leveling Frostfall Sickle through every milestone takes roughly 4 W-Engine components and Denny ×400,000, Anomaly Component ×4, Reinforced Anomaly Component ×32 Denny combined — the components drop from Combat Simulation; see the exact breakdown per milestone and the Battery cost in the "How Much You Need" and "Where to Farm" sections above.

Is Overclocking Frostfall Sickle worth it?

Overclocking only strengthens Frostfall Sickle's passive effect from ★1 up to ★5 (5 copies) — it never changes Base ATK or the sub-stat, so getting the base copy matters far more; treat extra copies as a bonus.

Where do I get Frostfall Sickle?

Mostly through Signal Search gacha (Polychrome); a few A/B-rank W-Engines are tradeable at the Gadget Shop's Box Galaxy or come from story/event rewards — see the "How to Get" section above for details.