- Cost to restore: 1,500 crystals
- Location: Dais
- Effect: The user gets a boost to AVD.
This sealstone can be detrimental if set on a dais if you attack enemies from the front. Flanking them or attacking them from behind, however, should cancel out any benefits they might be getting from the sealstone. It could be beneficial to hold if you have a character who serves as an AVD tank (eg. a Sorcerer or Lwyn), but you should otherwise have better options at that point. It is not a particularly cheap sealstone, so there is no real reason to restore it.
In Norse mythology, Sleipnir is the name of Odin's eight-legged horse. The sealstone could be named after it as a reference to the horse's speed and agility.