Talk:Karthus/@comment-8506165-20140305190817/@comment-24449104-20140318203931

Personally the only reason I build RoA first is for the early mana and it's later game synergy with Seraph's. I see your point though I might try rushing rylai's first now. However, when it comes to his passive i'd much rather have the raw ap for the execute as opposed to the utility.

side note: Rylai's, liandry's is my second favorite item synergy in the game, and with Karthus's spammable Q, and AOE dot it's a massive amount of damage.

Again in my personal experience, I've found that late game karthus really doesn't need boots. Being a highly imoblie champion to begin with he can benefit from another item rather than boots, and with rylai's slow it allows him the opporotunity to get out of sticky situations.

PS:  Rylai's proc's 35% slow when Karthus's Q hits a single target, so it's really good in laning ;)

Sorry if i'm butting in or going off topic, I like these "discussions" between players.