User blog comment:KeithCornell/Champion Rework - Hecarim, the Shadow of War/@comment-7709681-20150511215220/@comment-25228021-20150512123055

Hecarim building Manamune? New W does make charging Tear easier, but Manamune won't help him that much since only E procs the active. I won't deny this is a buff to his health sustain, but early he's going to have to pay a lot of mana for it.

Also, Sion's ult lasts 8 seconds. New E lasts 3 at best and deals no AoE.