Honestly, all the Stinger build items need a rework.
builds into
,
, and
, which I think is not even available on SR.
The common theme between them is AS, CDR, a passive, and some random other stats. I think Zephyr really need to be better focused on either AD or movement. Its current flavor is really more of a movement-focused item with the %MS bonus and Tenacity, so it makes sense for it to stay that way. OP's movement theft idea fits that. But this makes it a must-have item for every ranged attacker. it would have to be greatly reduced or flat-out unavailable for ranged attackers. (Melee only?)
Before adding more stats, we have to decide what to remove. If you remove the %MS bonus, you're making the item strictly worse than it is now unless the total amount of MS theft were greater than the current bonus. Viable. But would it be balanced? Again, depends on whether its a percentage theft or a flat one, and how much per hit. At this point it would be a purely numerical balancing question for the PBE.
If you remove the Tenacity, well... you're taking away from the movement theme, as well as removing 1 of only 2 remaining Tenacity items in the game. Probably not the best idea.
Remove AD? No one builds Zephyr for the AD. That's just icing. They build it for MS+Tenacity. This could work.
If AD were removed, we would need to remove the
AD item from the formula and replace it with something else. AS+CDR come from Stinger and need to stay. The only viable low-tier movement items are boots or
. And if you use the latter, you will need to add 30 AP to the item to preserve the Aether Wisp stats. The gold value is almost identical to Pickaxe. But do we really need or want another AP+MS item when we already have Nashor's?
I think changing the MS% bonus to a theft mechanic is the best choice.
For Nashor's, I don't understand why it's CDR is a Unique Passive. This should be moved to a regular CDR stat. The AP doesn't bother me any. But 60 AP is not exactly exciting. And It's second passive requires 180 AP to do the same damage as
. The AA requirement offers little for champs that would build enough AP items to actually get that high. WE offers flat MR and an MR steal. NT costs 320 gold more than WE. WE is pretty much better in every way. But it does synergize nicely with
, as well as Spell and Blade Weaving masteries. Then again, so does WE.
btw, guess what Lich Bane is built from? Aether Wisp and Sheen. Hmm... what about building Nashor's from Stinger and Sheen, replacing the weak on-hit passive with Spellblade? An AS + Spellblade item with a moderate AP bonus could be good without being OP.