Steelswarm Roach (CT09-EN021)

2 Level 4 monsters

During either player's turn, when a Level 5 or higher monster would be Special Summoned: You can detach 1 Xyz Material from this card; negate the Special Summon, and if you do, destroy it.

Fiend / Xyz / Effect, Collectible Tins 2012 Wave 2.5