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.
This is just a general build. Items should be changed/rushed depending on the enemy team.
Typically I start with boots and 3 health potions.
Depending on the enemy team though if they say are heavy magic/ap I'll rush banshees and merc treads then quicksilver and frozen mallet.
If heavy phys I'll put thornmail on in place of banshee's.
If a mix of the 2 I'll stick to this and rush items depending on the biggest threat.