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Spell profile
Primary casterReinforce
Hayate Yagami
Magic systemAncient Belka
Japanese nameスレイプニール
First app.A's (ep.10)

Sleipnir (スレイプニール Sureipunīru), without much details in the canon sources, is a spell for flying or flight ability enhancement.

The six black wings usually seen on the back of Hayate Yagami's Knight Armor is Sleipnir and the wings are not needed when she stays on the ground.[1] Hayate is also seen without the wings during certain conditions, e.g. when carrying by Reinforce due to her health condition in the portable continuity, or when pairing with Fortress in Force etc.

Reinforce also has four larger black wings most of the time when she is in her Battle Clothing, including the time when she is the Will of the Book of Darkness.

Presumably, in the portable continuity, the six black wings of Lord Dearche is also Sleipnir. In The Gears of Destiny, after absorbing the power of Stern the Destructor and Levi the Slasher, her wings partially glow in vermillion and blue colors. Such form of her is known as "Lord Dearche Trinity" in the INNOCENT adoption.


The spell is named after the eight-legged horse Sleipnir from the Norse mythology.

Notable usesEdit

  • Sleipnir is specifically cast by the Will of the Book of Darkness in A's (ep.10) before she flies into the air. The wings on her back increases in size afterwards.[2]
  • In Hayate's scenerio in The Battle of Aces, she practices Sleipnir, i.e. flying.


  1. ^ Magical Girl Lyrical Nanoha The MOVIE 2nd A's Setting Info Collection.
  2. ^ Magical Girl Lyrical Nanoha A's, episode 10.

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