Chief Engineer [Commander 2016] SM52 that have Xyz Material Once

that have Xyz Material Once per turn: You can Special Summon Rank 9 or lower "Number" monsters with 3000 or less ATK that have different Ranks from each other from your Extra Deck

You can only activate 1 "Gateway to Chaos" per turn

Set: Hidden Arsenal 3 Card type: Effect Monster Rarity: Super Rare Attack: 1700 Defense: 700 Once per turn

Soldiers often blocked off the steep mountain passes to ambush enemy troops in western and central China

Chief Engineer [Commander 2016] SM52 that have Xyz Material OnceSet: Commander 2016 Type: Creature Vedalken Artificer Rarity: Rare Cost: {1}{U} Artifact spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an artifact spell pays for {1} or one mana of that creature's color.) An eye for detail, a mind for numbers, a soul of clockwork.