standard card game sleeves Mayday Premium (63.5x88 mm) access card shoe during the game Gamegenic Gamegenic Sleeves: Standard American

This is because the card has seen only a single printing, as part of the HasCon 2017 Promo range

Then if there are fifteen or more artifact cards in your graveyard, target opponent loses the game

Their first Link Monster, "Virus Swordsman" also helps with this as its able to Special Summon a "Zero Day" from almost anywhere, which can also possibly happen during either players turn as this activates whenever the monster is Summoned though it must be co-linked at the time

Warrior version Basilicock

Mystic Intellect (Flashback), Commanded by Sevinne, the Chronoclasm Sevinne, the Chronoclasm will command the Jeskai-colored Flashback deck in Commander 2019