User blog comment:Doo2you/MANAMUNE!/@comment-174.60.175.106-20121101225708

Manamune itself might not be a bad item for Darius, but both MM & FH is probably too much.

The real issue with Manamune is how slowly the mana stacks toward its max. If they doubled the mana gains per ability use/autoattack, then it'd be more viable across the board. They'd also have to increase Tear/Archangel, too.

Otherwise, when building a 15k gold build, having something which grants 60+ attack power, decent mana and mana regen, for only ~2100ish gold could be a real boon.

Manamune/Tear/Archangel requires something like 12.5 minutes to max of constantly spamming a 3 second cooldown ability. Compare that to Rod of Ages which requires nothing but having the item in inventory, and it only takes 10 minutes to max.