Whta support helps Vayne the most during laning phase?

Janna is great at peeling and also provides Vayne with the shield which helps her a lot in early trades where she typically has a disadvantage.

Nami has sutain, her E works wonder with Vayne who naturally wants to hit 3 times in a row, and together they can chain CC very well condemn into wall > bubble > wave > kbai.

Alistar has great peel and sustain and their CC works well together if played correctly.

Thresh of course is just Thresh and does wonder with anyone.

Soraka can be good if you want a super farm lane with Vayne but a hard-engage lane will give them a tough time.

Morgana can be nice provided that you can make do with the lack of sustain but her shield basically gives Vayne impunity XD

I like braum because of the passive, it really works well with vayne or nami, then vaynes autos slow

Loads of supports can help her (or any adc for that matter)

Support like Sona/Janna can help by giving them a boost in power. Along with those Leona, Lulu, Raka, Bruam, Thresh can help by their CC, Shields/Heal etc.

Personally, I like playing with Raka. She doesn't do much, but she is going to heal me so that I can try and farm more. Other than that, any support that is currently strong works fine. Thresh, Blitz, Leona, Braum....

nami/jana/lulu

is best with .

It has to do with the way you combo them together. One part of it is her tornado can be used in conjunction with condemn for a stun lock, as well as allowing both of them to get away (peeling) if they get aggro.

The other part, and the most important, is shield. At maximum rank it provides 50 AD (same as BF Sword) when it is on . Since starts with an AS item usually and has bonus to AS from her tumble, the shield AD value has greatly increased gold efficiency. Add in ultimate and you're looking at near 100 AD bonus at level 6 which is a practically guaranteed kill. Also the AD bonus helps for wrecking down the tower and dragon in the early game.

Later in the game, the combos still work but ultimate can be used to disengage or push targets near a wall. likes walls.

Tbh I prefer a support that gets the enemy off my adc when it's tristana or vayne, because laning phase I'd rather we farm until late game . Janna, alistar, or nami can keep you safe in the laning phase. If you want something riskier, play bard. Have vayne condemn Into wall. Then q. Double stun . Gg