Your search for "Iron Chain Snake CSOC-EN018" revealed the following:
Iron Chain Snake - CSOC-EN018 - Common - Unlimited from Crossroads of Chaos Unlimited, available at 401 Games Canada. Rarity: Common Card Text:During your Main Phase, you can equip this card to 1 face-up monster your opponent controls. That monster...
Iron Chain Snake - CSOC-EN018 - Common - 1st Edition from Crossroads of Chaos 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:During your Main Phase, you can equip this card to 1 face-up monster your opponent controls....