New season starts on Friday. This season you will draft cards, when getting new abilities as you level, instead of ramdomly like in Season 3.
For those who havent heard about this before, Project Ascension is World of Warcraft mod, where you dont have classes but choose your abilities and talents as you level.
The setting is vanilla, but the abilities and talents are WotLK. I think the xp rate is around x6 or x8.
The best part is the option to play in High Risk mode, which means full pvp and partial loot drop. There is also increased xp and loot rewards, adding dungeon and raid gear to the table.
Its a lot of fun, and its free!