Reinhardt, Descendant of the Ethereal King (TUS-078 RR) [The Underworld of Secrets]

[Partner] 2 (Moonchild)"Possession" EX Area (2) - As the game starts, you gain a "Possession" EX Area with two spaces or expand your "Possession" EX Area by two spaces until end of game. If an Ethereal resonator you control would be put into your graveyard from the field, you may put it into your "Possession" EX Area instead. Apply this effect only once per turn.