Control (コントロール Kontorōru) is the term used to describe who can use what card on the field. Most of the time, cards remain under the control of their owners, but a few cards can bend this situation.

Cards such as "Change of Heart", "Brain Control" , "Creature Swap" and "Enemy Controller" allow one to take control of monsters owned by one's opponent.

When a monster switches control to you, place it on your side of the field. It is returned to the original owner's Graveyard when sent to the Graveyard in any way.