Reroll champions?

Well, They provide way more shards now via level up. You used to be able to spend 5100 IP and buy 3 shards and roll them for 6300 or 7800 champions. Now accounts with high content cant, but low content accounts can spend 3950 BE on mystery champion unlocks. Basically they wanted to add more help to younger accounts and nerf older accounts abusing rerolls for discounts with low to 0 RNG on it. If you have a lot of champs to unlock focus on the low cost ones first then use mystery champions to grind 6300's at a discount.