Champion of Black Magic is a Japanese set in the Yu-Gi-Oh! Official Card Game.
In other languages, it has been amalgamated with Advent of Union to create Magician's Force.
The set contains the "Amazoness" cards used by Mai Valentine and a number of Spellcaster-Type monsters, similar in design to "Dark Magician", many of which use the Spell Counter mechanic. The set reprints "Buster Blader" in Ultimate Rare and contains the Fusion of him and "Dark Magician", "Dark Paladin".
Highly sought after cards include "Breaker the Magical Warrior", "Magical Scientist" and "Tribe-Infecting Virus".
Each pack contains 5 cards and each box contains 30 packs.
There are 54 cards in total or 58 in the Master Set. This is comprised of: