This card can be treated as 2 Tributes for the Tribute Summon of a monster. You can only use each of the following effects of World Legacy – World Ark once per turn.
• If a Link Monster(s) you control is destroyed by an opponent s card effect and sent to your GY (except during the Damage Step): You can send this card from your hand to the GY, then target 1 of those Link Monsters; Special Summon it.
• If your opponent Special Summons a monster(s) from the Extra Deck, while this Normal Summoned Set card is on the field (except during the Damage Step): You can send 1 monster from your Deck to the GY.