Talk:Kassadin/@comment-115.147.72.140-20130112062820/@comment-3013755-20130119024318

Nether Blade is a weird "Spell." Because it behaves like a Spell and not like an On-Hit effect.

Which means it procs the full 35% Rylai's slow and full spellvamp effect.

Since it also counts as a single-target spell, it counts for Muramana drain as well. Meaning that 3% of your mana will drain from autoattack and 3% of your mana will drain from Nether Blade.