Thread: Success rate for upgrading/amount

Code:

Tier  Success rate  +atk/+def
1           11%           20/40
2           22%           15/30
3           33%           12/24
4           44%            9/18
5           50%            7/14
6           60%            5/10
7           70%            4/8
8           80%            3/6
9           90%            2/4
10         100%           1/2