Pro tip: Get more blue essence by trading your event tokens for random champ shards and disenchanting them rather than exchanging directly for blue essence. - r/leagueoflegends
League of Legends" Hextech Crafting Guide: How to Get the Most Skins - LevelSkip
PSA: If you own all champs you can reroll 3 champion shards to get Aurelion Sol for free : r/leagueoflegends
Odd's of getting a champion shard 2 times in a row? : r/leagueoflegends
Riot explains how to unlock Eternals without having to buy RP - Dot Esports
Buying and Selling Champion Using Champion Shard (League of Legends) Tips and tricks - YouTube