2 Level 4 DARK Dragon monsters

Neither player can target this Xyz Summoned card with monster effects, except its own. Once per turn: You can detach 1 material from this card, then target 1 face-up monster on the field; it loses 600 ATK/DEF, then, you can Special Summon 1 "Borrel" monster from your GY, but banish it during the End Phase, also you cannot Special Summon other monsters or attack directly for the rest of this turn.