What champions are getting price drops with the Kalista release?

According to Surrender at 20, Viktor went to 4800 IP and Amumu went to 450 IP

If that's true, I'm disappointed in riot's decision making here. It's bad enough to only discount non 6300s every 3rd release (we're going to end up with a massive collection of 4800s), but to discount a 1350 when it is time to make that discount? ? The 1350s are fine, I don't mind spending 1350 on a champion at all. Drop a 4800 or a 3150, like actually give us some new cheap champs rather than changing a cheap to super cheap :/

Really though, it should be one 6300 to 4800, and one other champion each release, with the other champion cycling between 4800, 3150, 1350. We'll still end up with a lot at 4800 even then, but at least it would be a) predictable and b) more reasonable.

That, or discount on age only. At 2 years old discount to 4800, then each 12-18 months after drop it again.

Does anyone know when kalista's price is dropping?

https://support.riotgames.com/hc/en-us/articles/202083304-Permanent-Champion-Price-Reduction

says Viktor from 6300 -> 4800 & Amumu from 1350 -> 450, like DrCyanide said