Should Vayne build defensive?

Vayne's most reliable build is the one that protects her first real spike without leaving her with no defensive answer. If your item order stops you from playing that timing, the build quickly loses value.

When should Vayne's build be adapted?

You should adapt as soon as the enemy draft stops you from playing the timing your build was meant to serve. If you need to survive longer, absorb more poke, or answer a specific engage, the purchase order has to move earlier.

Which enchant should you choose on Vayne?

Quicksilver often remains the most reliable choice when enemy crowd control mainly stops her from keeping up her autos. If this enchant gives her time to fire a few more attacks, it gives more value than a more aggressive choice.

Vayne Wild Rift Best Build Guide (Patch 7.1h)

Melhor build de Vayne em Wild Rift

Vayne's standard build mainly aims to give her a first real timing, then enough margin to survive short-range fights. The first items should help her win long duels without leaving her with no defensive answer.