Kai'Sa & Amumu Synergy

Kai'Sa ADC and Amumu Support win 53.5% of 890 Low Elo games together, +1.0 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.

Playing the duo

Amumu's Bandage Toss(Q) and Curse of the Sad Mummy(R) stun enemies, helping stack Kai'Sa's Plasma; Cursed Touch(P) also makes targets take bonus true damage from incoming magic damage.

How to play as Kai'Sa

Follow Amumu's Q or R stun with Void Seeker(W) and attacks while the target is held; Amumu players note that his crowd control gives Kai'Sa passive stacks and a clear opening to follow.

How to play as Amumu

When Bandage Toss(Q) lands, let Kai'Sa follow with her W and attacks; save Curse of the Sad Mummy(R) for when she can join the area so both of you can stack Plasma across the caught enemies.

Sources

These notes come from r/kaisamains, checked against the champions' abilities.