Blessing of the Eleventh Hour

Blessing of the Eleventh Hour (土壇場の祝福, Dotanba no Shukufuku) is considered to be a supplementary ability rather than a Magic; in fact, it's more of a Magic Skill due to its state of constant activation and how it's received. According to Natsu Drákontos, the obtainment of this specific ability is a sign of a person's status as a "saint" — one who's been blessed by the heavens themselves, their very existence being dedicated to slaying all forms of evil and bringing peace to the land. He further states that it's a type of Enchantment and something affiliated with the element of light itself, brought forth by the bearer's own experiences in battle.

It's considered to be a form of Caster Magic by Gardenia herself, stating that the magic has a slew of other capabilities aside from mere empowerment; this is especially true when utilized with all light-based and "positive" magics and abilities, including the infamous Devil Slayer Magic and God Slayer Magic alike.

Overview
"As my soul becomes an instrument of divine justice, may the heavens fill me with their grace and mercy. Saints of the previous lives, martyrs who died for the sake of their beliefs, help me find strength so I may rid the world of the evil that stands before me. The sun, a symbol of the Supreme God's countenance over our world, may your rays bathe me and fill me with warmth, protecting me from all harm. O Lord, I entrust this body to you---"

- Gardenia's chant as she invokes the vast and powerful capabilities of this skill.

Trivia

 * The author created this magic to further allude to Gardenia's status as a protagonist in the series and her status as a "saintly being" in lieu of certain aspects of her personality.
 * The name of this magic is a reference to the terminology behind the phrase "Eleventh Hour" — roughly resembling a point in time which is nearly too late. However, this is subverted in this case, as the "eleventh hour" represents the near pinnacle of the sun's position at the sky, being at its full-peak at noon. In this sense, this article inadvertently makes reference to Escanor and his unique ability, Sunshine, from the anime/manga series, Nanatsu no Taizai.