Cannot be Normal Summoned/Set. Must be Special Summoned (from your GY) by banishing 1 "Magnet Warrior Sigma Plus" and 1 "Magnet Warrior Sigma Minus" from your hand, face-up Monster Zone, and/or GY. Once per turn, when your opponent activates a card or effect (Quick Effect): You can target 1 monster your opponent controls; destroy it, or if you targeted an EARTH monster, you can take control of it instead. During your opponent's turn (Quick Effect): You can Tribute this card; Special Summon 2 of your banished "Magnet Warrior Sigma" monsters.