Silksong Tools & Guides
Silksong

Memory Crystal – Hollow Knight: Silksong Tool Guide

ON-DAMAGE ICE BURST FOR AREA CONTROL

A Blue Tool that spawns a crystal statue when you take damage, which then explodes on contact (base ~20 damage, scales with tool level). Found in Mount Fay via the lower-left bench route.

Memory Crystal tool illustration from Hollow Knight Silksong showing blue crystalline burst icon
ACT 1
MOUNT FAY (Lower-left bench route)
ON-HIT
ICE
TRAP
1
SLOTS
20
BASE DAMAGE

IMPACT STATS

DAMAGE
40%
SURVIVAL
60%
MOBILITY
20%
UTILITY
70%
ECONOMY
30%

ACQUISITION

Method:Pickup
Location:Mount Fay (Lower-left bench → hidden wall → ice tunnel)
Cost:Free
Requires:Breakable wall + ice breaking route (Tool Pouch helps)

Go to Mount Fay. From the lower-left bench room, break the right-side hidden wall, enter the ice tunnel and keep breaking regrowing ice. At the end, shatter the giant ice crystal to obtain Memory Crystal.

DESCRIPTION

When you take damage, Memory Crystal spawns a crystal statue at or near the hit location. After a brief delay, it explodes when an enemy touches it (or if you strike it), dealing base ~20 damage with radius ~5–8 tiles. Damage scales with the tool level multiplier.

Strong in narrow corridors and against adds-heavy fights (force enemies to path through the crystal)
Weaker vs highly mobile bosses (statue spawns where you were hit)
Synergy: Claw Mirror (bind flash) and Weighted Belt (reduce knockback to hold position)

MECHANICS & EFFECTS

Trigger:On taking damage
Damage:~20 base (scales with tool level)
Radius:~5–8 tiles
Upgrades:Tool Pouch increases damage/radius
Best For:Corridors, adds control

ADD TO BUILD PLANNER

Add Memory Crystal to Build

Plan your perfect build with Memory Crystal and other tools

TRAP & CONTROL TOOLS COMPARISON

ToolSlotsActDamageUtilityEconomyNotes
Memory Crystal112/54/53/5On-damage ice burst; strong adds control
Sting Shard113/53/52/5On-hit shard retaliation; immediate but smaller area
Claw Mirror133/55/52/5Bind flash damage; punishes close-range during heal

FREQUENTLY ASKED QUESTIONS

A: Memory Crystal takes 1 slot, fitting easily into early-tool pouches.

A: When Hornet takes damage, a crystal statue spawns and explodes on contact after a short delay, dealing base ~20 damage (scales with tool level multipliers).

A: Go to the lower-left bench room, break the right-side hidden wall, traverse the ice tunnel by breaking regrowing ice, then shatter the giant ice crystal at the end.

A: Best against adds-heavy encounters and narrow corridors. It is weaker versus highly mobile bosses since the crystal spawns where you were hit.

A: Tool Pouch levels increase damage and/or radius. See our use-cases and comparison with Claw Mirror and Sting Shard.