Rabastan was in the Great Hall with Severus and Mulciber, talking about the next quidditch game. Honestly, Severus wasn't even listening to a word they said, but Rabastan could have cared less. What was important in that moment was to find a way to make the other team lose by using not so fair methods. They were planning basically everything, from how high they would fly and when they would strike to make the rival team fall off their brooms.