Riftmaker 224633since 13.14.1 7 changes
2500g (2500g base, 1250g sell)
Void Corruption: For each second in combat with enemy champions, deal bonus damage. At maximum strength, gain Omnivamp.
Void Infusion: Gain a % of your bonus Health as Ability Power.
Builds into: 
Icathia's Curse
HealthSpellDamageCooldownReductionSpellVamp
Click any two patches to compare; the current range is shaded.
− For each second in combat with enemy champions, deal bonus damage. At maximum strength, gain Omnivamp.
+ For each second in combat with enemy champions, deal 2% bonus damage, up to 10%. At maximum strength, gain Omnivamp.
− Gain a % of your bonus Health as Ability Power.
+ Gain 2% of your bonus Health as Ability Power.
− For each second in combat with enemy champions, deal 2% bonus damage, up to 10%. At maximum strength, gain Omnivamp.
+ For each second in combat with enemy champions, deal 2% bonus damage, up to 8%. At maximum strength, gain Omnivamp.