Infinity Edge is a popular item in the game League of Legends. It is primarily used by marksmen and some assassins to enhance their damage output. The item provides a significant boost to critical strike chance and increases the damage of critical hits, making it a key component for champions who rely on dealing high burst damage. To build Infinity Edge, players typically need to gather gold by defeating enemies and completing objectives. Once acquired, it synergizes well with other items that increase attack damage and critical strike chance, allowing champions to maximize their effectiveness in battles and team fights.