Carefree Melody

Carefree Melody is a Charm in Hollow Knight. It has a chance to block damage when the Knight is hit.

Usefulness


The block chance resets to 0% every time the charm prevents damage, and increases with each hit taken. Overall, it negates damage on 22.4% of hits taken, which effectively gives the player 29% more health. With 13 masks (including those added via healing), the charm will enable the player to take just as many hits as Lifeblood Core against sources of double damage. And, unlike the other health-increasing charms, it also improves the player's healing efficiency by 29%, since each mask healed is 29% more valuable.

The hit counter doesn't reset even when the charm is unequipped. If you manage to get hit many times without it activating, you can unequip the charm to store the increased block chance for later. Storing a 7 hit Carefree Melody means the next attack has a 90% chance to be blocked. This can be especially useful against radiant bosses in the hall of gods, as a single blocked attack effectively doubles the player's health. However, there's only a 1.5% chance of getting to 7 hits without it activating, so grinding for 90% block requires taking 293 hits on average. Comparatively, getting the charm to 70% block would happen once every 46 hits.

Will allow the effects of other charms to continue through or activate alongside its own effect, save for Grubsong which requires taking actual damage.

How to Acquire
After banishing the Grimm Troupe, the charm can be acquired from Nymm by talking to him in Dirtmouth.

Probability
The overall probability of blocking a hit comes out to 22.3794%, leading to an effective increase in player health of 28.8317%.

The odds of the charm activating increase with each hit taken since it last blocked damage:

Getting the charm up to 7 hits without it activating can take quite a long time:

Trivia

 * This charm takes up the spot that Grimmchild was in previously.
 * The Delicate Flower will be destroyed even if damage was negated by Carefree Melody.
 * Carefree Melody is inaccessible in Godseeker Mode.
 * Over an infinite series of masks, the charm will activate on approximately 22.3794% of all incoming hits. However, since each activation itself preserves more health to advance the activation process with, this comes out to an average 28.8317% increase in effective health. Furthermore, since this health is not added through masks, it doubles as a 28.8317% increase to effective health gained per heal as well, regardless of the healing method.
 * The precise chance of it activating on the 1st, 2nd, ... hit are 0%, 10%, 18%, 21.6%, 25.2%, 17.64%, and 6.048%. The odds of getting to 7 without activating is 1.512%

Беспечная песнь Melodía_Despreocupada