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Grubberfly's Elegy is a Charm in Hollow Knight. When at full Masks, it causes Nail strikes to shoot a projectile which deals 50% Nail damage per hit.[Note 1] Projectiles can pierce enemies infinitely, although they can't do multiple ticks of damage to one enemy.

Usefulness

Grubberfly's Elegy is an effective Nail range upgrade, this Charm is very powerful as a crowd-control tool and when fighting certain bosses such as the Watcher Knights, or Oro and Mato.

This Charm is useful for completing the Delicate Flower quest as it allows for fighting from a distance.

It can be used for exploring areas and switched out for another Charm when fighting bosses. However, during the fight with the Radiance, the projectiles of Grubberfly's Elegy can deal damage to the boss without the need to jump, which can be a viable source of damage when combined with the Quick Slash Charm. This also applies to the Flukemarm fight as the combo makes quick work of her without needing to jump to reach her.

The range of the projectiles is not affected by Longnail nor Mark of Pride, though their height is increased 35% with the latter.

Grubberfly's Elegy can be useful for defeating Godmaster Icon.png Radiant difficulty bosses since the Charm's effect is never lost, as being hit results in instant death anyway.

When used with Joni's Blessing, taking damage of any kind halts the effects of Grubberfly's Elegy until resting on a Bench, even if the health is restored by Hiveblood.

How to Acquire

Gifted by the Grubfather after freeing all 46 Grubs.

Charm Synergies

Grubsong.png

Grubsong
When used in combination with Grubsong, the amount of SOUL received from taking damage is increased by 10 (to 25 SOUL).
Fury of the Fallen.png

Fury of the Fallen
Fires red projectiles at one Mask, dealing ~67.5% Nail damage per projectile.[Note 2] Note that this works only when the Knight has only 1 Mask left (No projectiles are sent at 1 Mask if Fury of the Fallen is not equipped). While at one Mask, gaining any Lifeblood Masks negates the effect of Grubberfly's Elegy but not the effect of Fury of the Fallen.
Mark of Pride.png

Mark of Pride
Increases the height of the projectiles from Grubberfly's Elegy by 35%.

Charm Combo Tips

Fragile Strength.png

Fragile Strength
Stacks multiplicatively with Fragile Strength, dealing ~77.5% Nail damage per projectile.[Note 3][Note 4]
Lifeblood Heart.png

Lifeblood Heart
Grubberfly's Elegy only counts Mask health as full health, so by using Lifeblood Masks (except those gained from Joni's Blessing), taking damage no longer removes Grubberfly's Elegy's effect.
Lifeblood Core.png

Lifeblood Core
Can be used as an alternative to Lifeblood Heart with a higher Notch cost.
Hiveblood.png

Hiveblood
Taking damage and then regenerating it with Hiveblood restores Grubberfly's Elegy's effect. However, this does not work in combination with Joni's Blessing.
Quick Slash.png

Quick Slash
Allows the Knight to launch projectiles at a faster rate.
Heavy Blow.png

Heavy Blow
Allows projectiles to knock back enemies from greater distances.

Notes

  1. 1.0 1.1 The damage is rounded to the nearest integer, or nearest even integer if halfway between two. This results in 2/4/6/8/10 damage at Nail upgrades 0/1/2/3/4.
  2. First, the damage multiplier from Grubberfly's Elegy (50%) is applied and rounded. Then, the damage multiplier from Fury of the Fallen (150%) is applied and rounded, also to the nearest integer. This results in 3/6/9/12/15 damage at Nail upgrades 0/1/2/3/4.
  3. First, the damage multiplier from Fragile/Grimm Troupe Icon.png Unbreakable Strength (150%) is applied and rounded, also to the nearest integer. Then the damage multiplier from Grubberfly's Elegy (50%) is applied and rounded. This results in 4/7/10/13/16 damage at Nail upgrades 0/1/2/3/4.
  4. With all three Charms, the damage of Grubberfly's Elegy's projectiles is calculated as follows: First the damage multiplier from Fragile/Grimm Troupe Icon.png Unbreakable Strength (150%) is applied and rounded. Then the damage multiplier from Grubberfly's Elegy (50%) is applied and rounded. Finally, the damage multiplier from Fury of the Fallen (150%) is applied and rounded. This results in 6/10/15/20/24 damage at Nail upgrades 0/1/2/3/4.
Charm Compendium
Main Game
Wayward Compass.png

Wayward Compass
Gathering Swarm.png

Gathering Swarm
Stalwart Shell.png

Stalwart Shell
Soul Catcher.png

Soul Catcher
Shaman Stone.png

Shaman Stone
Soul Eater.png

Soul Eater
Dashmaster.png

Dashmaster
Thorns of Agony.png

Thorns of Agony
Fury of the Fallen.png

Fury of the Fallen
Fragile Heart.png

Fragile Heart
Fragile Greed.png

Fragile Greed
Fragile Strength.png

Fragile Strength
Spell Twister.png

Spell Twister
Steady Body.png

Steady Body
Heavy Blow.png

Heavy Blow
Quick Slash.png

Quick Slash
Longnail.png

Longnail
Mark of Pride.png

Mark of Pride
Baldur Shell.png

Baldur Shell
Flukenest.png

Flukenest
Defender's Crest.png

Defender's Crest
Glowing Womb.png

Glowing Womb
Quick Focus.png

Quick Focus
Deep Focus.png

Deep Focus
Lifeblood Heart.png

Lifeblood Heart
Lifeblood Core.png

Lifeblood Core
Joni's Blessing.png

Joni's Blessing
Grubsong.png

Grubsong
Grubberfly's Elegy.png

Grubberfly's Elegy
Hiveblood.png

Hiveblood
Spore Shroom.png

Spore Shroom
Sharp Shadow.png

Sharp Shadow
Shape of Unn.png

Shape of Unn
Nailmaster's Glory.png

Nailmaster's Glory
Dream Wielder.png

Dream Wielder
Kingsoul.png

Kingsoul
Void Heart.png

Void Heart

Unbreakable Heart.png

Unbreakable Heart
Unbreakable Greed.png

Unbreakable Greed
Unbreakable Strength.png

Unbreakable Strength
Dreamshield.png

Dreamshield
Weaversong.png

Weaversong
Sprintmaster.png

Sprintmaster
Carefree Melody.png

Carefree Melody
Grimmchild.png

Grimmchild
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