We aggregate millions of Arena matches each patch to rank champions by their average placement, top 4 rate, and pick rate. Champions that consistently finish in the top half are tier S+ or S; champions with placements near 4.5 sit at C or D. Sample sizes are weighted — a champion with 100 games has lower confidence than one with 5,000.
The tier list updates every 15 minutes from the live match crawler. New patches typically shift rankings within a day as the player base adapts. For per-champion builds, click any card.