Diana & Yasuo Synergy
Diana Jungle and Yasuo Mid win 50.3% of 7,815 Low Elo games together, +0.9 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
Diana's Moonfall(R) pulls enemies into its area and gives Yasuo a Last Breath(R) follow-up; his suspension holds the gathered targets while her delayed damage lands. Players from both communities describe the pair's coordinated ultimates as a strong teamfight combo.
Measured in High Elo: this duo wins 1.6pp more often than expected over 5,968 games.
Playing the duo
Moonfall(R) pulls enemies toward Diana, which Yasuo players report can trigger Last Breath(R); Yasuo then holds nearby airborne enemies in the air while Diana's delayed area damage resolves.
How to play as Diana
Use Moonfall(R) while Yasuo can follow with Last Breath(R); your pull gives him the trigger, and his suspension keeps the gathered enemies in the area for your delayed damage.
How to play as Yasuo
Stay in range for Diana's Moonfall(R), then cast Last Breath(R) as the pull lands; your suspension can hold the gathered enemies through her delayed damage.
Sources
These notes come from r/DianaMains, r/leagueoflegends, and r/YasuoMains, checked against the champions' abilities.