The Phantom Knights of Break Sword

“2 Level 3 monsters Once per turn: You can detach 1 material from this card, then target 1 card you control and 1 card your opponent controls; destroy them. If this Xyz Summoned card is destroyed: You can target 2 "The Phantom Knights" monsters with the same Level in your GY; Special Summon them and increase their Levels by 1, also you cannot Special Summon monsters for the rest of this turn, except DARK monsters.”