If this card is Normal or Special Summoned: You can add 1 Level 4 or lower "Magnet Warrior" monster from your Deck to your hand, except "Beta The Electromagnet Warrior". You can only use this effect of "Beta The Electromagnet Warrior" once per turn. During your opponent's turn: You can Tribute this card; Special Summon 1 Level 4 "Magnet Warrior" monster from your Deck (this is a Quick Effect).
Can get 2 of your other level 4 Magnet Warrior monsters from your deck.
Second effect to special summon a monster from your deck can only be activated during your opponent's turn.
Berserkion The Electromagna Warrior
Berserkion requires 3 specific Electromagnet Warrior monsters to summon. But this is actually not as difficult as it sound because Electromagnet Warrior all have the secondary effect to search each other out. Alpha The Electromagnet Warrior even lets you search out Berserkion, while Beta The Electromagnet Warrior searches an extra Magnet Warrior monster when summoned.
If you already have at least 1 Magnet Warrior monster in the graveyard, you can summon an Electromagnet Warrior and activate its second ability during your opponent's turn. Special summon Delta from your deck and send any Magnet Warrior monster other than Delta. You can send your Delta to the graveyard either by letting it get destroyed, or use cards like Enemy Controller to send it to the graveyard and get Valkyrion the Magna Warrior out to the field.