Forum:Solemn warning question

How does solemn warning work against an xyz summon, for example if my opponent uses two level 4 six samurais to summon an xyz, and i activate solemn warning, not only do i stop the summon of the xyz monster but does he lose the material that would of been used on the xyz?

Jaaaackaa (talk • contribs) 11:58, April 20, 2017 (UTC)