it is more the upcomming hydra, i think a tanky item would have been placed better there, ie: sunfire or randuins.
ghostblade, well.. its still annoying but i guess its "alright" on heca. but i would never ever in my life get a hydra on that pony
Any good Karthus builds there?
Both give great mana sustain, managing your mana with one and investing in a damage/defense/whatever item after you get either athene or tear is much better than buying two mana items and losing an item slot for something you already have.
You'll hardly ever get oom after getting one of those items, plus in late game, teamfights aren't gonna even last long enough for you to use up all your mana pool.