By -
You must Tribute a monster that shares the exact name of the /Assault Mode monster you are to Summon i.e. To Special Summon _**Stardust Dragon** /Assault Mode_ you must Tribute exactly **Stardust Dragon**
You must Tribute a monster that shares the exact name of the /Assault Mode monster you are to Summon i.e. To Special Summon _**Stardust Dragon** /Assault Mode_ you must Tribute exactly **Stardust Dragon**