Usefulness

Fragile Strength increases Nail damage by 50%. It does not affect damage from other melee sources, such as the Crystal Heart dash or the Sharp Shadow dash.

This charm is extremely powerful, at the cost of just only one more notch it permanently provides a similar benefit to Fury of the Fallen without the obviously risky need to be at one health. It does stack with Fury of the Fallen, providing a 162.5% damage increase when both charms are equipped and the player is at one health.

The obvious downside is that once broken, Leg Eater will only repair it for a price. Late-game, the Geo may not be much of an issue, but the trip will be.

This charm is quite potent, despite the fact that it breaks upon death. One way to make use of the charm is to only use it in situations where dying is unlikely, such as exploration, in tandem with survivability-increasing charms, while avoiding its use in boss battles, except for Dream Boss battles (as the charm will NOT break when dying to these bosses).

Lastly, it should be noted that its drawback is completely negated in Steel Soul runs since the run is over upon death anyway, making Fragile Strength one of the most powerful and useful charms on a Steel Soul run.

How to Acquire

Purchased from Leg Eater in Fungal Wastes for 600‍600. Wearing the Defender's Crest will cause the Leg Eater to lower the cost to 480‍480.

When broken, Leg Eater can repair it for 350‍350, or, while wearing the Defender's Crest, for 280‍280.

	The Grimm Troupe Content

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Unbreakable Strength

Once the player has summoned the Grimm Troupe, Divine becomes accessible in Dirtmouth. To get the unbreakable version of Fragile Strength, the player must equip it then when speaking to her, give it to her when prompted. She will eat the charm, then ask for 15000‍15000. Once the Geo is paid, she gives the player the unbreakable version of the charm.

Charm Interactions

For charm interaction damage, see Damage Values and Enemy Health

Fury of the Fallen	Stacks with Fury of the Fallen, providing a 162.5% damage increase at one health when both charms are equipped.
Grubberfly's Elegy	Stacks multiplicatively with Fragile Strength, producing 76% Nail damage (rounded up) per projectile. 4/7/10/13/16 damage per Nail upgrade 0/1/2/3/4.
Stalwart Shell	Especially efficient in combination with Stalwart Shell, allowing the player to quickly dispatch a charging enemy without taking extra hits.
Quick Slash	Especially efficient in combination with Quick Slash, allowing the player to quickly deal a large amount of damage.