Rake
-100% stones once you have 5 stars should be changed.
Main atribute: from 0.1 to 0.4. That is 4x times higher.
"Aditional" atribute: from 0.3 to 0.7. It should be from 0.3 to 1.2 (4x times aswell).
Getting a 5 stars card is an incredibly long work so stones should be up to that waste of time. This "f2p" path (crazy farm) is not worth at all when you could just pay some diamonds and have all maxed.
-Random stones: They are as bad as always, nothing changed. That "chance increase" is pure shame.
I have the feeling all this was a scam to make us farm mobs (+600 per card) to have same bad numbers and spend even more than doing the "diamonds expensive" way. You gotta change this and stop fooling us. We waited 1 year to have a totally failed system with wrong numbers even on day 1 when the rework was thought.
You said we had 2 ways.
1: diamonds way -- super fast and expensive
2: farm way -- long and super cheap. The super cheap part is non existant. We pay same or even more than first way.
Edit 1: Persistance (orange) stone is not working either as it should. I tried with HP atribute. Spent 200 diamonds and can't go higher than 13hp (max is 30).
Edit 2: Proposition to random stones (Fortune blue stone). Example, max 10 Int
1 star : Chance increased by 2 times. --> Give numbers higher than 20% of max (between 2 and 10)
2 stars: Chance increased by 2 times. --> Give numbers higher than 30% of max (between 3 and 10)
3 stars: Chance increased by 3 times. --> Give numbers higher than 40% of max (between 4 and 10)
4 stars: Chance increased by 3 times. --> Give numbers higher than 60% of max (between 6 and 10)
5 stars: Chance increased by 4 times. --> Give numbers higher than 80% of max (between 8 and 10)
You need to change the formula and include all numbers in same proportion.
In a 1 star card: all numbers (2, 5, 7 or 10) should have same % of sucess. Remove that crap way of trying to get a higher number is mathematically impossible (yes, you added this later. It wasn't there on first patches).