Spark Sleipnir is an Energy Layer released by Youngtoys for the Burst System. It debuted in South Korea with the release of the B-194 Random Booster Vol. 27.
Despite the "Spark Sleipnir" name, Youngtoys' Spark Sleipnir is simply a recolored Galaxy Pegasis. As such, one should refer to the Galaxy Pegasis page for information on performance.
Spark Slepnir (Official Image)