Jak'Sho, The Protean 226665since 13.14.1 6 changes
2500g (2500g base, 1250g sell)
Voidborn Resilience: During combat with champions become empowered, increasing your bonus Armor and Magic Resist until end of combat.
Builds into: 
The Unspoken Parasite
HealthSpellBlockArmorMagicResist
Click any two patches to compare; the current range is shaded.
− During combat with champions become empowered, increasing your bonus Armor and Magic Resist until end of combat.
+ After 5 seconds of champion combat, increase your bonus Armor and Magic Resist by 30% until end of combat.
− After 5 seconds of champion combat, increase your bonus Armor and Magic Resist by 30% until end of combat.
+ After 5 seconds of champion combat, increase your bonus Armor and Magic Resist by 40% until end of combat.