It’s not quite that simple, I have seen it vary even among level 12 blue cards. I thought it had something to do with the level of abilities that are lost but I haven’t found the formula. It doesn’t vary by much anyway.

Quote Originally Posted by hornyg4mer View Post
Sounds familiar: Originally posted 6/26/20
The "strength" of that third ability always seemed to be constant depending on the rarity. My lvl 6 epic blue card always gave 9 if used on another blue, and 8 if used on a green. Now that i can level up my epics past 6, lets see if these numbers go up (so far though, they stay at 9 for me)