Hextech Revolver is an advanced item in League of Legends. 
Cost Analysis *
* is 82. gold efficient without its passive. 86%
Total cost reduced to 1050 from 1200 .
Combine cost reduced to 180 from 330 .
Removed: Spell vamp.
New Passive – Magic Bolt: Damaging an enemy champion with a basic attack shocks them for 75 - 150 (based on level) bonus magic damage on hit. 30 seconds cooldown, which is shared with other Hextech items.
Spell Vamp reduced to 12% from 15%.
Spell Vamp reduced to 15% from 20%.
Spell Vamp component is now Unique.
Spell Vamp increased to 20% from 15%.
Spell Vamp increased to 15% from 10%.
Recipe: + + 330 = 1200
+40 Ability Power.
+10% Spell Vamp.