Talk:Cassiopeia/@comment-4832742-20140902231120/@comment-3148314-20140903122911

You didn't read its description then.

Twin Fang now additionally refunds its mana cost + an additional 3% of Cassio's max mana. So, you can spam it (lategame) to farm or to regain mana - and health - after a fight!

Early, I still use Q to farm, but get at least 1 rank in E to "farm" mana. :)