Goyo Emperor

2 EARTH Warrior-Type Synchro Monsters When this card, or a monster you control that is owned by your opponent, destroys an opponent's monster by battle and sends it to the Graveyard: You can Special Summon that monster to your side of the field. When your opponent Special Summons a monster(s), except during the Damage Step: You can Tribute 1 EARTH Warrior-Type Synchro Monster; take control of that monster(s). If this face-up card leaves the field: Return control of all monsters you control to the owner.