Check the latest information for Set 6.5: Neon Nights
At the start of combat and every 6 seconds afterwards, the Hexcore sends out a pulse that charges up allied Hextech champions with a shield for 4 seconds (does not stack). While the shield is active, attacks deal bonus magic damage on hit. Additionally, the shield and bonus magic damage are 20% stronger for each augment in the Hexcore.
2 100 shield, 15 magic damage
4 150 shield, 30 magic damage
6 275 shield, 55 magic damage
8 375 shield, 90 magic damage