Thank you! 😊

Example:

You join the game with 10 players right? Each of these declared a set of 10 champions that they'd like to have in the game. As a player you'd usually include those you like to play, that you are good against, or like to play together with.

Any duplicates out of these 10 player-pools are, of course, removed. If every player by accident picked exactly the 10 same champions you'd end up with a pool of, well, 10 champions.

If by accident, all of these players chose different champions than any other player you'd end up with 100 unique champions, right?

Instead of picking from all the available champions, the pool is now already narrowed down a lot. You can only chose from those 10 to 100 champions.

The number of bans is created dynamically. If you end up with less than 20 unique champs you'd not have any bans. From a pool size of 20 on, you have one ban per team (20 / 20 - 0.5 = 0.5).

Let's take a realistic pool. You have 57 unique champions in the pool. Every team can ban 2 champions each (57 / 20 - 0.5 = 2.35). You chose from 53 champions.

Last example is with the biggest possible pool: 100. Each team can ban up to 5 champs (100 / 20 - 0.5 = 4.5). You'd end up with 90 available champs.