Questions on some trap cards

[luffy]

Are Sakuretsu Armor and Magical Cylinder single target? If so, they target monster right?

 

[densetsu_x]

They both are targeting effects, in this case, the attacking monster you are responding to.

 

[luffy]

So cards like Fiend Skull Dragon and Tyrant are able to stop this effects right?

 

[DaGuyWitBluGlasses]

Yes, Fiend Skull Dragon and Tyrant Dragon will negate the effects of Magic Cylinder, Sakuretsu Armor.