Phantom Dancer vs Runaan's Hurricane

Vayne's silverbolts are only stacked on a single champion at a time so Runaan's Hurricane is terrible on her. Phantom dancer is pretty good on her, the attack speed, critical strike chance, and bonus movement speed all work very well with her.

Crit is your critical strike chance, it's the percentage chance that your auto attacks will deal double damage, also known as a critical strike.

You should usually build Blade of the Ruined king first item on her, followed by a Phantom Dancer or Statikk Shiv.

Critical chance increases the "Chances to deal DOUBLE the damage"

Build and your Critical hits will do 250% of your damage..

Say you do 150 damage.. when you Critical hit with your auto attack did 375 damage!

but as vayne it's best to build first..

Phantom dancer is always better as the attack speed you get for the hurricane is only 20% better then the attack speed from phantom dancer which also gives you 35% chance to deal double damage (crits) with each auto attack... also it lets you walk through minions

Neither of these are as good as blade of the ruined king on Vayne anyway which adds 10% of your opponents current hp as extra damage, gives her lifesteal and 40% attack speed. This item I believe is the only item to give life steal AND attack speed both of which great on vayne and the 10% current hp damage works well in terms of damage with her W (also known as synergy)

Never runaans on vayne.

Vayne: Champion that can shit on anyone and everyone (subject to early game results). BorK: Once unsheathing the legendary blade you get to go ape shit on everyone and anyone (subject to cheese). Runaans: I only play this game for cs.