You can rank-up in three ways.
1st way
Taking a re-test. You can re-test three weeks after your first test. Re-Test for Slifer Student to Ra Yellow cost 500 EDA Cash and +40 posts.Re-Test for Ra Student to Obelisk Blue 700 EDA Cash + 40 posts.
2nd way
By paying with EDA Cash
From Slifer to Ra - 1200 EDA Cash
From Ra to Obelisk - 2200 EDA Cash
3rd-SPECIAL WAY
Twice per month will be organized a duel against 2 duelists.
An example: Slifer member vs Ra member or Ra member vs Obelisk member.
The winner and the loser will switch their dorms.