What's strange about the spell damage of World of Warcraft Magic Wrist Brace 15?

In WOW, the enchanted wristband 15 injury map shows that Feng Daoshan's blood hammer soothsayer fell, with a falling rate of 7. 1%. Enchant Wrist Brace-spell energy: Bind after picking, requiring enchantment (360). Teach you to learn to permanently enchant a pair of wristbands to increase their spell strength by 15 points. The equipment grade shall not be less than 35.

The game is introduced:

World of Warcraft is the first online game produced by Blizzard Entertainment, a famous game company, which belongs to a massively multiplayer online role-playing game. The game is based on the plot of the real-time strategy game "Warcraft" produced by the company. Relying on the historical events and heroes of Warcraft, World of Warcraft has a complete historical background timeline.