Advanced format ruling
Brain Jacker
Card effect (current official text)FLIP: Equip this card to a monster on your opponent's side of the field and treat it as an Equip Card. Take control of the equipped monster. Your opponent gains 500 Life Points during each of their Standby Phases.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.