So I just laned against Zed as Veigar, and noticed his ult just literally cancels mine. Is this intended? I have read anywhere that it is supposed to just make him ignore damage. The description on the client says he "dashes to target champion".
When Zed ults, he becomes briefly untargetable. It's kind of like when you use Zhonya's. Nothing can hit you, and anything already on the way to hitting you disappears. It is intended.
Well damn, thanks for the replies everyone.
He becomes untargetable, so yeah it works as intended. Same as a Fizz troll pole or a Yi Alpha Strike.
He goes untargetable, so any targeted projectiles in transit will not hit him if they reach his position before he comes out of his untargetability. Same thing happens with karthus ult, annie q, GP q, etc....
invulnerable protects from everything
untargetable protects from basically anything not already attached to them like debuffs or tethers or things that attach and deal damage similarly to a tether
I may be able to clarify.
Death Mark
FIRST CAST: Zed vanishes for 0.75 seconds while dashing behind the target enemy champion, marking them on arrival, becoming Ghost ghosted for 3 seconds, and spawning a Living Shadow.png Living Shadow at the cast location (lasts for 6 seconds)
For clarity:
Vanishes: This is not a form of stealth. Zed leaves the game entirely becoming:
- Untargetable (even from the fountain laser)
- Invulnerable
- Completely Invisible (even when near a source of true sight)
Do not confuse this with being untargetable or invulnerable. An untargetable champion can still die while being untargetable if they have a DoT on them (example: 
) before becoming untargetable.
In comparison, Invulnerable champions do not take any damage what-so-ever. Even from fountain lasers or DoTs
Hope I could clarify the differences for you
