Magni gained possession of his father's legendary uru hammer Mjolnir, which had several enchantments. Magni demonstrated the ability to throw the hammer and have it magically return to him, fly by throwing it and holding onto its leather thong, and create dimensional portals. Upon gaining Mjolnir, Magni discovered that he instinctively knew how to use it for basic things. The lady Sif instructed him on how to traverse dimensions with it. Still, his proficiency with the hammer may be assumed to be far less than his father's.