duel academy rules

1-only a duelist in ra dorm can write in ra dorm and goes on

2- u can upgrade in 2 ways
A) Winning a tournament
B)paying an amount of super credits
slifer to ra =2000
ra to obelix=4000
obelix to light dorm=6000

3-u cant get upgraded from slifer to obelisk even if u had 4000 super credit

4- 4 every dorm there will be a tournament to determine the leader of the dorm it goes when members in one dorm becomes 8 then 16 then 24 then 32 and goes on