Laevateinn

This is a grimoire where the realm of fire, Muspelheim is sealed. At the time of Ragnarok, Surtr had fully unlocked the power of the grimoire and burned the world tree by releasing Muspelheim. However, in return, he was turn to ashes, and the grimoire, who lost its owner, closed its eyes and waited.
 * The rating of the grimoire is "Legend".
 * When consumed, fire magic affinity will rise to the limit. The magic power consumed by fire magic will be reduced by half. Fire damage lower than the user’s level will be ignored. Fire damage above the user’s level will be reduced.
 * When consumed, Ring of Muspelheim will be acquired. Muspelheim’s fire can be used step-by-step.
 * When consumed, you can’t control the power of this grimoire with your current capabilities. If you want to be recognized as its master, you must be at least a 8th Circle master or 9th Circle user.