Joni's Blessing

Joni's Blessing is a Charm in Hollow Knight. It changes all Masks to Lifeblood Masks and increases Masks by 40% (rounded up). When selecting the Shell binding in the  Pantheons, it increases Masks from 4 to 7 (10 with Fragile Heart/ Unbreakable Heart).

Number of Lifeblood Masks
The 40% increase in Masks granted by Joni's Blessing only takes into account the base Masks and the two Masks added by Fragile/ Unbreakable Heart. Masks added by Lifeblood Heart and Lifeblood Core are not included in the calculation.

Usefulness
When having Joni's Blessing equipped it becomes easier to enter the Lifeblood Core room in the Abyss. With 8-9 Masks and Fragile Heart/ Unbreakable Heart or Lifeblood Heart, it is easy to make the 15-Mask threshold, thus earning Lifeblood Core.

As with Lifeblood Heart and Lifeblood Core, Joni's Blessing is more useful in a Spell-focused build where SOUL can be used to cast Spells rather than heal. As such, it should be saved for later in the game when more Notches have been acquired, but Lifeblood Core remains inaccessible.

However, Lifeblood Core is usually a more efficient Charm for adding survivability in the endgame. Joni's Blessing adds at most 5 Lifeblood Masks while Lifeblood Core adds 4, costs 1 less Notch, and does not prevent healing.

How to Acquire
Found in Joni's Repose in the Howling Cliffs. The Charm is resting on the corpse of Blue Child Joni.

Trivia

 * Reaching 1 Mask while having this Charm equipped does not create black streaks across the screen.
 * If the Knight dies, the HUD displays a single empty Mask, representing a maximum of 1 regular Mask. This affects the Knight's Shade health and causes it to die in one hit.
 * There is a glitch where the Knight occasionally gains one additional Mask after they have taken damage to what is supposedly their last available Lifeblood Mask. This additional Mask is a normal white Mask but is covered in the black fog effect until destroyed.
 * The actual formula of Lifeblood masks (as in code) is: . For max health 5 and 10, floating point precision problem cause   and , resulting 7 and 14 Lifeblood Masks, respectively.

Bendición de Joni Благословение Джони Błogosławieństwo Joni Bénédiction de Joni