STON-JP012 The Six-Warmasters - Irou
As long as there are monster(s) on your side of the field with "The Six-Warmasters" in their name except "The Six-Warmasters - Irou", if this card attacks a monster in face-down defense mode, skip damage calculations and destroy that monster in face-down defense mode. If this card is destroyed, you can destroy a monster with "The Six-Warmasters" in its name, excluding this card, instead.
What is there to say? This guy is basically a Mystic Swordsman with almost doubled attack. Of course, he needs one of his borthers to get the effect working, but he can hold off with that unique 1700 attack....