Yasuo & Nami Synergy
Yasuo ADC and Nami Support win 57.1% of 1,539 Low Elo games together, +1.9 points vs expected, 2-patch window 26.19-26.20.
Researched on LoL patch 26.20. Tips are written to hold at any rank; stats come from Low Elo ranked games up to patch 26.20.
Why this duo works
Nami's Tidal Wave(R) knocks enemies up for Yasuo's Last Breath(R), and Aqua Prison(Q) also counts as an airborne trigger for Yasuo while its suspension holds. That gives Yasuo two reliable ways to start his ultimate without first landing his own tornado.
Measured in High Elo: this duo wins 1.6pp more often than expected over 1,024 games.
Playing the duo
Nami's Q suspension can trigger Yasuo's R even though it is not a conventional knockup, and Nami's R provides a conventional multi-target knockup as a second setup.
How to play as Yasuo
You can cast R on Nami's bubble suspension as well as her wave knockup; don't wait for your own Q tornado if she has already caught a target.
How to play as Nami
Use Q on the target Yasuo wants to ult, or cast R through a group to give him a wider airborne window; call out which setup you are using so he can follow immediately.
Sources
These notes come from r/NamiMains, checked against the champions' abilities.