Aphelios is one of the most unique champions in League of Legends. Instead of four sepate abilities and an ultimate, this champion has a selection of five different weapons that are suited to specific nges and situations. Because of this, Aphelios often has a weak early game. But towards the middle to later phases of the game when he can acquire items, the Weapon of the Faithful is one of the most powerful ADCs in the game.
As with all champions in League, Aphelios is going to require different items and runes depending on his situation in-game. That said, however, Aphelios has many items that will make the champion extremely powerful and bring out the best results in-game.