Kayn & Brand Synergy
Kayn Jungle and Brand Mid win 56.2% of 1,027 Low Elo games together, +2.1 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
Brand's conditional stun gives Kayn a clear follow-up window on mid ganks, while Kayn can approach through terrain to create an unexpected angle. The setup depends on Brand first applying Blaze so Sear(Q) stuns.
Playing the duo
Brand's Sear(Q) stuns a target already Ablaze, giving Kayn a window to land Blade's Reach(W); in Rhaast form, that hit also knocks the target up.
How to play as Kayn
When Brand has applied Blaze to a mid-laner, approach through a wall with Shadow Step(E) and follow his Sear(Q) stun with Blade's Reach(W); wait for the stun rather than opening with W from range.
How to play as Brand
Apply Blaze before committing Sear(Q) on a gank so it stuns; tell Kayn when the stun is coming so he can follow with Blade's Reach(W) instead of spending it before your setup.
Sources
These notes come from r/KaynMains, checked against the champions' abilities.