Yone & Amumu Synergy
Yone Top and Amumu Jungle win 55.3% of 3,034 Low Elo games together, +1.7 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
Amumu's Cursed Touch(P) converts part of incoming magic damage to true damage after he curses a target, and Yone's Way of the Hunter(P) adds magic damage on every second attack. That gives Yone's repeated attacks a pair-specific payoff while he follows Amumu's catch.
Playing the duo
Amumu's Cursed Touch(P) makes cursed enemies take bonus true damage from incoming magic damage, and Yone deals magic damage with every second basic attack even while building as an attack-damage champion.
How to play as Yone
Keep attacking Amumu's cursed target so your every-second-attack magic damage benefits from Cursed Touch(P)'s bonus true damage.
How to play as Amumu
Tag the priority target with a basic attack to apply Cursed Touch(P) before Yone's follow-up, then use Bandage Toss(Q) or Curse of the Sad Mummy(R) to hold them in range.
Sources
These notes come from r/amumumains, checked against the champions' abilities.