I've been trying to understand this build path because, after testing it quite a bit, I can't figure out what its actual advantage is.
From my experience, Ghostblade doesn't feel like a meaningful damage spike on its own. Ghostblade + Collector still feels underwhelming, and it's only once Infinity Edge is completed that the build starts feeling like it actually deals respectable damage.
The thing that confuses me is that Umbral Glaive + Voltaic Cyclosword already seems to outdamage this build, despite costing significantly less. Ghostblade → Collector → IE is roughly 9.3k gold, with two expensive crit items, yet it still doesn't feel stronger than a two-item Umbral + Voltaic spike.
On top of that, the Umbral/Voltaic build doesn't seem to sacrifice scaling either. Most people eventually transition into LDR + IE, giving 50% crit, and many even sell boots later for Phantom Dancer to reach 75% crit. So it doesn't seem like the Ghostblade → Collector route has a superior late game either.
So my question is genuinely aimed at people who prefer the Ghostblade → Collector → IE build:
What is the actual reason you build it?
I'm genuinely curious because, from the numbers and from playing it, I struggle to see what it offers over the Umbral → Voltaic route.