One of Mizar/Mizael’s remaining cards has finally been confirmed for release!
CPF1-JP030 Galaxy Stealth Dragon
Rank 4 DARK Dragon-Type Xyz Effect Monster
Materials: 2 Level 4 Dragon-Type Monsters
(1) Once per turn: You can detach 1 Xyz Material from this card; Special Summon 1 Dragon-Type monster from your hand.
(2) Other “Galaxy” cards you control cannot be targeted by, or destroyed by, an opponent’s card effect.