Magic Spear: Ten Commandments

Magic Spear: Ten Commandments (魔鎗 テン・コマンドメンツ Masō: Ten Komandomentsu) is a Magical spear used by Erza Knightwalker.

Description
It is one of strongest Edolas weapons. By changing the spear's form, the Erza Knightwalker can use 10 kinds of magic that the spear provides. (If you count Blue Crimson as 2 spears that makes 10.) Each spear has its own special ability.

Trivia

 * In addition to sharing the same name, Erza Knightwalker's weapon also uses the same abilities as the Hiro Mashima's previous work, the Ten Commandments. However, instead of using a sword, she uses a spear, and the kanji sword (剣) is replaced by spear (鎗) for it's abilities.
 * With the exception of Gravity Core, the powers of each form is identical to their namesake in Rave Master's Rave Ten Commandments, but it is uncertain whether it possesses the all of its forms (Eisenmeteor, Million Suns and Sacrifar).