Mejai's Soulstealer is a legendary item in League of Legends. Mejai's Soulstealer costs 1600 gold and grants 20 Ability Power, 100 Health and Unique Passives (Glory, Dread).
+20 Ability Power
Unique - Glory: Gain 4 stacks for a champion kill or 2 stacks for an assist (up to 25 stacks total). Lose 10 stacks on death.
Unique - Dread: Grants 5 Ability Power per stack of Glory. Gain 10% Move Speed if you have at least 10 stacks.
Limited to 1 Glory item.