Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Actual mana at 18: 5823.048
Actual AP at 18: 380
Bonus to Overload at 18: From mana:+582 From AP:+76
Bonus to Rune Prison at 18: From mana:+291 From AP:+228
Bonus to Spell Flux at 18: From mana:+0 From AP:+133
1 Combo of Overload Rune Prison Spell Flux 1770 Damage. With Ult on heals you for 266 health.