Chthonian Polymer

Yu-Gi-Oh Card: Chthonian Polymer
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Chthonian Polymer
Type:Normal Trap
Text:You can only activate this card when your opponent Fusion Summons a Fusion Monster. Tribute 1 monster on your side of the field to take control of that Fusion Monster.
Printings: Dark Revelations Volume 4 (DR04-EN117)
Duelist Pack 2: Chazz Princeton (DP2-EN029)
Elemental Energy (EEN-EN057)