IntroductionDominion is a mode in which you need to be very mobile, get in/out extremely quick and with the main purpose to capture/defend points. This build is solely built on such ideals. I would never build Vayne this way in a normal game. As For Dominion, this is by far one of the best builds I have used. It has allowed me to be versatile, help out my team and rank #1 every time I use it.
Vayne is one of the best Dominion Champs out there. Reason being is that she is rarely picked in draft. She is not OP so she never gets banned and she simply RAWKS FACE in gap closing. She is very under estimated and is often challenged 1v1. This is a great thing, being that if you know how to play her right you will come out on top. Team fights is your sexy time and when you are low leave and NO ONE will catch you with this build.
By far the most OP summoner spell reason to which its a must have. Get you out of tough situations and another way to get in position to kill.
Perfect to get you to a capture points fast or to get away or even to catch up to a foe. This with your Boots of Mobility + 2 Phantom Dancer + Priscilla's Blessing + the map speed buffs = map teleport awesomeness. Its simply ridiculous.
Masteries23/6/1 is very close to the standard that you would get for Vayne in normal games although this has a bit more focus in damage and one in Haste to help out your Ghost summoner spell.
RunesThis set is all about the attack speed. You are making up for the fact that you have Boots of Mobility instead of Berserker's Greaves by gaining 25% attack speed with your runes alone. So now you have the movement speed with attack speed runes + cool down reduction to get where you need to be fast and bum rush your foe.
9 Greater Mark of Alacrity
for attack speed, to make up for your boots.
9 Greater Seal of Resilience
Lets face it there is no better Seal than armor.
9 Greater Glyph of Focus
for cool down reduction to get you through your combo faster.
3 Greater Quintessence of Alacrity
to top off your attack speed to 25%.
Other ItemsYou may be wondering why I didn't go with other high damage items or have gotten more defensive items. Truth is, this is a very fast pace game. It takes some good time to build better items and you really just need constant boasts to give you an edge over other appointment's. Let me explain:
An amazing item, definitely the best for damage and Vayne. BUT, there is just not enough time to really utilize it in Dominion. By the time you have built this item its very likely you wont have enough speed to output the damage or the other players already have an advantage on you or your team. Dont get me wrong its very possible to get this item and rawk other with it. BUT It takes too long to get it puts your behind in game. You don't want to be behind on kickassery.
Another great Item for Vayne. But you will be building so much speed with the rest of the build that this is not necessary anymore.
This is not needed UNLESS the someone is fed and can one shot you. Other than that your life steal will do all the rest for you.