core items (in order)
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.
With 80% crit it is very easy to get your mana back so you can keep spamming your w. Also when choosing whether to buy lord dominik's or mortal reminder look at their team and see if they have someone like a vladimir, garen, swain, or mundo. If they do its best to get mortal reminder to stop them from healing.