
Enchanter · magic (AP) damage
Later items show higher win rates partly because games that last that long are usually already being won. Compare items within a slot, not across slots.
Sorcery
Summon Aery
Arcane Comet
Deathfire Touch
Axiom Arcanist
Manaflow Band
Nimbus Cloak
Transcendence
Celerity
Absolute Focus
Scorch
Waterwalking
Gathering Storm
Resolve
Grasp of the Undying
Aftershock
Guardian
Demolish
Font of Life
Shield Bash
Conditioning
Second Wind
Bone Plating
Overgrowth
Revitalize
Unflinching

Based on 25,902 games · 51.3% win rate · High elo · patch 26.20.

When Nami's Abilities hit allied champions they gain Move Speed for a short duration.

Sends a bubble to a target area, dealing damage and stunning all enemies on impact.

Unleashes a stream of water that bounces back and forth between allied and enemy champions, healing allies and damaging enemies.

Empowers an allied champion for a short duration. The ally's basic attacks and spells deal bonus magic damage and slow the target.

Summons a massive Tidal Wave that knocks up, slows, and damages enemies. Allies hit gain double the effect of Surging Tides.
R Tidal WaveStuntenacity helpsFROM
Q Aqua PrisonSlowignores tenacityFROM
E Tidecaller's Blessing
R Tidal WaveSome of their lockdown (airborne) ignores tenacity, so you dodge it; you can't cleanse or Merc' through it.
Tap or hover a crowd-control type to see which ability it comes from.