2 monsters Can only be Link Summoned while you have a "World Legacy" card in your GY. You can only use each of the following effects of "Lib the World Key Blademaster" once per turn. ● During your Main Phase: You can Set 1 "World Legacy" Spell/Trap from your Deck, but it cannot be activated this turn while you have no "World Legacy" monster in your GY. ● If this Link Summoned card is sent to the GY as Link Material: You can shuffle 1 card on the field into the Deck.