Youmuu's Ghostblade 3142since 0.151.2 46 changes
3100g (900g base, 2170g sell)
Haunt: Gain up to 100 Spectral Shards while moving. Gain Move Speed out of champion combat based on the number of Spectral Shards. While at max Shards, gain Lethality. Shards will reset 3 seconds after dealing damage to an enemy champion.Mythic Passive: Grants all other Legendary items Attack Damage.
Active — Active -:
Active — Wraith Step: Gain Move Speed and Ghosting.
Ghosted units ignore collision with other units.
Builds from: 
Serrated Dirk
Caulfield's Warhammer
Builds into: 
Youmuu's Wake
DamageActiveNonbootsMovementArmorPenetrationAbilityHaste
Click any two patches to compare; the current range is shaded.
− (0s)Gain Move Speed and Ghosting for 6 seconds.
+ Gain Move Speed and Ghosting for 6 seconds.
− Gain 20 Move Speed while out of combat.
+ Gain Move Speed while out of combat.
− Gain Move Speed and Ghosting for 6 seconds.
+ Gain Move Speed and Ghosting for seconds.