Necrobinder Build

🪓 The Gallows Doubler

Stack the multipliers, drop one apocalyptic swing

Updated for Early Access patch 0.104.0· Updated 2026-06-06

BAdvanced

Big HitMultiplierOne-ShotSingle Target

Win condition: Cast Hang repeatedly on one target so its damage doubles every time (10 → 20 → 40 → 80...), multiply that with Lethality's first-attack bonus and an amplified Vulnerable from Debilitate + Putrefy, then deliver a single overwhelming hit that deletes the boss or elite outright.

B-Tier
Tier: Advanced
Difficulty: 12
Core cards: Boss-killer, niche
Power

Reviewed by SpireForge Editorial

Updated 2026-06-06

Strategy informed by Baalorlord, Ic0n Gaming, MythyMoo

Deck core

Core cards

The cards this build is built around — prioritize these on every run.

Must-pick

Flex picks

Synergy

Relic priorities

What to grab from shops, bosses and chests to power the engine.

History CourseCore
Replays your last Attack at the start of your turn — a free extra Hang cast every turn, doubling the multiplier hands-off.
Throwing AxeCore
First card each combat is played an extra time — open on Hang for an immediate double-cast head start.
Paper PhrogStrong
Vulnerable makes enemies take 75% more damage instead of 50% — a flat multiplier on your finishing Hang.
Music BoxStrong
Creates an Ethereal copy of your first Attack each turn — copies Hang for an extra doubling.
Unsettling LampStrong
Doubles your first debuff card each combat — double a Debilitate or Putrefy to over-amplify the target.
Pen NibSituational
Every 10th Attack deals double damage; with frequent Hang/Rend casts you can line it up with the finisher.
Ruined HelmetSituational
Doubles your first Strength gain each combat — fattens the base of every Hang before it's multiplied.
AkabekoSituational
8 Vigor at combat start adds flat damage to your first attack, padding the number under the doubling.

Game plan

How to play

Step-by-step through the run, from opening hands to the win.

Pick the target and start doubling
Hang only doubles for the specific enemy it hits, so commit to ONE target — the boss or the scariest elite. Every Hang cast doubles all future Hang damage to it, so the earlier you start chaining Hangs the more terrifying the final number becomes.
Recycle Hang to compound the multiplier
Hang is most explosive when replayed. Use History Course (replay last Attack), Throwing Axe (first card extra time), Music Box (Ethereal copy of first Attack), or a Duplicator potion to fire Hang multiple times a turn, each cast doubling the last.
Set up Lethality and the Vulnerable stack
Get Lethality down (it's Ethereal, so play it the turn you draw it) and apply Vulnerable with Putrefy, High Five, Squash, or Fear. Cast Debilitate to double that Vulnerable's potency, so your finishing Hang lands as the turn's first attack into a heavily amplified target.
Inflate with Strength before the swing
Prowess (permanent +1/+2 Strength and Dexterity) and Feeding Frenzy (+5/+7 Strength this turn) raise the base of every Hang and Rend hit before it gets multiplied — Strength is added before the doubling, so a little goes a long way.
Cash out the one-shot
On the payoff turn, sequence: Strength buffs → Vulnerable + Debilitate → then your final Hang (as the first attack for Lethality), ideally doubled by History Course or a Gigantification potion. If Hang isn't online, Rend or a full-Energy Eradicate is your backup big hit.
Don't neglect defense on the ramp
This is a single-target plan with a setup window, so carry enough Block (Fisticuffs, an Anchor turn, Block potions) to survive the turns spent doubling before the finisher lands.

Honest take

Pros & cons

Strengths

Deletes single high-HP bosses and elites outright once the doubling chain gets going.
Hang is a 1-cost card, so the combo is cheap to fire once the multiplier is built.
Layers cleanly with the class's debuff cards (Debilitate, Putrefy) the deck already wants.

Weaknesses

Almost no AoE — multi-enemy rooms and swarms are a real weakness.
Needs Hang plus a replay enabler to come online; bricks without the combo pieces.
Setup window leaves you exposed, and a target dying early can strand your invested doublings.

Opening

Mulligan & priorities

What to keep, what to ditch in your opening hands.

Keep Hang above almost everything — it's the whole archetype and needs to start doubling early.
Keep Lethality so your first-attack-of-turn finisher gets the percentage bonus.
Keep a Vulnerable applier (Putrefy, High Five, Squash) plus Debilitate to amplify the target.
Hold Strength sources (Prowess, Feeding Frenzy) for the setup turn rather than spending them early.
Toss raw AoE and broad-board cards — this build wants everything aimed at one enemy.

Map strategy

Pathing

How to route the map to assemble the build and stay healthy.

Hunt replay and multiplier relics

History Course, Throwing Axe, and Music Box all give Hang extra casts, which is where the exponential growth comes from. Pen Nib (every 10th Attack double damage) and Paper Phrog (Vulnerable = +75%) directly multiply your finisher — prioritize them at shops and elites.

Take Strength and Vulnerable enablers

Akabeko's Vigor, Sword of Jade / Vajra Strength, and Ruined Helmet (double first Strength gain) all pad the base damage that then gets doubled. Bag of Marbles and Red Mask hand you free opening debuffs to amplify with Debilitate.

Keep the deck lean

The combo only needs Hang plus a handful of amplifiers and a finisher backup. Thin Strikes aggressively so you draw Hang and Lethality reliably and can chain the doublings instead of bricking on filler.

Avoid these

Common mistakes

Spreading Hang casts across multiple enemies — the doubling is per-target, so splitting it resets the snowball.
Firing the doubled Hang as your second or third attack of the turn, wasting Lethality's first-attack bonus.
Forgetting to apply (and Debilitate-amplify) Vulnerable before the finishing swing.
Spending Strength buffs early instead of on the payoff turn, so they don't sit under the multiplier.
Running no replay source — without History Course, Throwing Axe, Music Box, or Duplicator, Hang doubles too slowly to one-shot a boss.

Quick answers

FAQ

Common questions about the The Gallows Doubler Necrobinder build.

Why is Hang the centerpiece of this build?

Hang deals 10/13 damage and doubles the damage ALL Hang cards deal to that enemy with every cast. That exponential per-target doubling is the only true damage multiplier in the Necrobinder pool, so a few replays turn it into a number large enough to one-shot a boss.

How do I get Hang to fire multiple times in one turn?

Use replay effects: History Course replays your last Attack at turn start, Throwing Axe plays the first card of combat an extra time, Music Box makes an Ethereal copy of your first Attack, and the Duplicator potion plays your next card an extra time. Each extra Hang cast doubles the running total.

Does the doubling apply to other enemies?

No — Hang's doubling is tracked per individual enemy it hits. Splitting Hang casts across a pack resets the snowball on each one, which is why the build commits hard to a single high-value target and is weak against swarms.

What's my backup if I don't draw Hang or a replay enabler?

Rend deals 15/18 plus 5/8 per unique debuff, so the Weak + Vulnerable + Doom stack you build also powers it. An X-cost Eradicate dumped into one target, or a Gigantification potion on any big attack, gives you another single-turn burst when the Hang combo isn't assembled.

Provenance

Sources & video guides

This build's strategy is informed by these community creators.