It is important to find the right set of items to buy, or having the right "build" because each champion has different playstyles. Champion items are divided into many categories, but the main ones are: Armor, Magic Resistance, Movement Speed, Attack Damage, Ability Power, etc.
An example of a champion that needs the right build is Yasuo. His passive doubles the critical strike chance he has, so the best item for him would most likely be:
- Infinity Edge
- Phantom Dancer
