mystery booster box mtg card list boosters contain 'The List' cards in Magic: The Gathering then draws that many cards. Mystery Booster 2 - Booster

Jack Atlas from Yu-Gi-Oh

This serves as a second summonable monster that doesnt require a normal summon, giving you even more fodder for Rikka tributes or for Xyz Summons

To be more explicit: Anything before a colon " : " is the Condition you need to fulfil to activate this Effect

Heavy Metal Raiders X SPELL Field The first time each DARK Machine monster you control would be destroyed by battle each turn, it is not destroyed, and if you took battle damage from the battle, it gains that much ATK after damage calculation, and keeps that ATK gain while this card is on the field

The formula is compelling because you begin in the dark with the truth slowly unveiling over time