What to know

  • Binding in Silksong involves interacting with Eva, a hidden NPC in the Weavenest Atla area.
  • To unlock the binding option, players must collect many Crests and invest Memory Lockets to expand tool slots, especially on the Hunter Crest.
  • Binding Eva gives a permanent boost: silk restoration at benches, improving healing efficiency without additional resource cost.
  • Bind is Silksong’s healing ability, requiring a full silk gauge and careful timing to execute safely due to vulnerability during the cast.

Hornet’s adventure in Hollow Knight: Silksong introduces a new mechanic called binding, most notably through an NPC named Eva. Binding Eva is a late-game feature that enhances gameplay by improving Hornet's healing through the silk system. This guide walks through the steps to bind, including where to find Eva, what requirements must be met, and how binding fundamentally changes your silk-based healing.

Who is Eva in Silksong

Eva appears in Silksong as part of the challenge system tied to bindings. While many bindings affect Hornet’s masks, silk, tools, or charms, Eva represents a distinct variant that changes how restrictions are applied. Instead of being a general toggle, Eva acts as the figure you interact with to apply certain bindings.

Eva location: Where to find Eva and the Weavenest Atla (quick guide)

Eva is located in Mosshome, beneath Bone Bottom. To reach her:

Use the Bellway to Bone Bottom.

Exit left and drop down a hole back to the game's starting area.

Move right to enter a spike and platform-filled room, then hop to a door marked with a Weaver's mask.

Play the Needolin (a musical tool) to unlock the door.

Inside Weavenest Atla, move right, destroy lamps to activate the area, and proceed until you find Eva.

How to find Eva: Step-by-step guide

Here you go:

1) Discovering Eva's hidden chamber in Weavenest Atla

Eva hides deep within Weavenest Atla, a late Act 1 or early Act 2 area unlocked after acquiring the Needolin Ancestral Art.

Start from the Moss Grotto's lowest bench.

Head east, breaking through several fragile walls to reveal a secluded path downward.

Activate two ceiling triggers to illuminate the chamber.

You will get a the Weavenest Atla Map.

Then access the beam elevator and descend to meet her.

Once there, Eva recognizes Hornet's unique crest affinity and offers initial upgrades to the Hunter Crest, expanding your tool slots.

But there's more! Read on.

Requirements for binding Eva: How to unlock the Bind prompt

Players typically need:

  • A broad collection of Crests, including early ones like Hunter, Reaper, Wanderer, and Beast, plus additional Crests found through Acts 2 and 3.
  • Invest Memory Lockets into these Crest slots, especially fully expanding the Hunter Crest first, as this is a common unlock trigger.
  • Return to Eva after making these upgrades, as the bind option appears only after revisiting with the proper Crest progression.

If the Bind prompt does not show, try the following:

  • Investing at least one Locket in the Hunter Crest.
  • Unlocking at least one new Crest or slot they may have overlooked.
  • Advancing further in the main story before returning.

How to perform the binding ritual with Eva step by step

Binding Eva concludes her arc, absorbing her essence for Sylphsong. Ensure prerequisites are met before approaching, as the prompt only appears then. Follow these steps to execute it smoothly.

Step 1: Verify your progress and prepare for return

Confirm you've collected at least 6 crests and consumed 18-20 Memory Lockets on them, unlocking all available slots. If upgrades stall, explore for the final crest like the Shaman. Rest at a nearby bench to save, then retrace to Weavenest Atla via Moss Grotto's spider gate—use Needolin each visit, as the door reseals.

Step 2: Navigate back to Eva's chamber safely

From the Moss Grotto entrance, play Needolin on the spider-marked gate to enter Weavenest Atla. Head right through the first chamber, light the two ceiling triggers for visibility, and ride the beam elevator down. Break the series of hidden walls eastward and descend the path, dodging minor enemies (as shown above). If infected with the twisted bud (a rare status), Eva offers unique dialogue and a binding seal, adding flavor but not altering the core process.

Step 3: Interact and exhaust her rewards fully

Speak to Eva multiple times if needed. She'll upgrade your crests sequentially—yellow slot first, then blue, followed by Hunter evolutions—as you present progress. Once all rewards are given and slots maxed, she'll express her final wish to bind, seeking escape from imprisonment.

This dialogue highlights her tragic backstory, tying into Silksong's lore of weavers and isolation.

Step 4: Accept the bind and acquire Sylphsong

Choose "yes" when prompted to bind her. Hornet performs the ritual, subsuming Eva's soul without combat. You'll gain Sylphsong immediately, which refills your Silk bar upon bench-resting, enabling frequent use of abilities and binds.

The Entwined achievement unlocks here, and Eva vanishes permanently. Test it at the nearest bench to confirm—Silk regenerates fully, revolutionizing resource management in tough areas.

Benefits of binding Eva and strategic tips for implementation

Sylphsong stands out for late-game efficiency, letting you recover Silk instantly at benches rather than grinding combats. Pair it with upgraded crests for hybrid builds, like combining Hunter evolutions with blue slots for defensive heals. In boss fights or dense exploration, it reduces downtime, but remember Eva's absence means no further upgrades—bind only after exhausting her perks.

Integrating Sylphsong into your Pharloom adventures effectively

With Sylphsong active, approach longer expeditions confidently, as benches become Silk hubs. It synergizes with Bind mechanics for uninterrupted healing chains, but balance it by farming lockets early to avoid late-game rushes.

Binding Eva is a significant late-game milestone that transforms how healing works by making benches refill silk automatically along with health. Achieving this requires thorough Crest and Memory Locket investments and revisiting Eva in Weavenest Atla. Understanding the silk system’s demands, mastering bind timing, and customizing controls further boost its benefits. Incorporate binding early into your improvement goals to experience a smoother, more efficient Silksong journey.