6eeba363_onsters___Yu_Gi_Oh__Card_Guide__Card_Text
[Card Name] Elemental HERO Electrum [Type] Fusion/Effect Monster [Attribute] LIGHT [Sub Type] Warrior [ATK] 2900 [DEF] 2600 [Card Text] 
Elemental HERO Avian + "Elemental HERO Burstinatrix" + "Elemental HERO Clayman" + "Elemental HERO Bubbleman" Must be Fusion Summoned and cannot be Special Summoned by other ways. While face-up on the field, this card is also WIND, WATER, FIRE, and EARTH-Attribute. When this card is Fusion Summoned: Shuffle all banished cards into the Deck(s). This card gains 300 ATK for each monster your opponent controls that shares an Attribute with this card.
Yu-Gi-Oh! Level 10 Monsters - Yu-Gi-Oh! Card Guide