Talk:Cassiopeia/@comment-9996568-20150302174333/@comment-1920550-20150302185935

Except, it's VERY worth to build both...ROA by itself won't help Cassio do her Q-EEE spam because of the mass amount of mana you'll consume, while Seraph's nearly doubles your mana pool, and with both you can guarantee a late game, near endless spam, where your E basically works as a late-game ADC AA...also the fact that Seraph and ROA gives a massive boost of AP due to the Seraph's mana conversion passive, which basically increases the gold value on both items by alot, and that value is even more increased due to the nature of Cassio's passive...hell there's alot of other champions who build the Seraph-ROA combo...Karthus, Anivia, Kassadin...it's an awesome combo for hyper-scaling burst mages due to the mass amount of AP, mana/sustain and tankyness it can provide.