Your search for "Armory Arm DP08-EN016" revealed the following:
Armory Arm - DP08-EN016 - Ultra Rare - 1st Edition from Duelist Pack: Yusei 1st Edition, available at 401 Games Canada. Rarity: Ultra Rare Card Text:1 Tuner + 1 or more non-Tuner monstersOnce per turn, you can equip this card...
Armory Arm - DP08-EN016 - Ultra Rare - Unlimited from Duelist Pack: Yusei Unlimited, available at 401 Games Canada. Rarity: Ultra Rare Card Text:1 Tuner + 1 or more non-Tuner monstersOnce per turn, you can equip this card to a...