And apparently made by magic, not high tech gadgetry with crystals. Except for a certain farmhand.
Equip Spell Card
Equip only to a Psychic-Type “Kozmo” monster. It gains 500 ATK and DEF, it can make up to 2 attacks on monsters during each Battle Phase, also if it attacks a Defense Position monster, inflict piercing battle damage to your opponent. If this card is sent from the field to the Graveyard: You can pay ?00 LP; add this card to your hand. You can only use this effect of “Kozmo Lightsword” once per turn.