How come I am not able to fuse two of my heroes? A lvl 24 3 star and a lvl 8 3 star?I got better versions of the heroes but cant get rid of the old.
Once you lvl up any hero you can only sacrifice it to hero of the same type.
For instance I've had a Rare 4 star purple Destroyer for a while and got it up to lvl 45, but I just got a Epic 5 star orange version earlier today. I was able to sacrifice the purple one to the orange one, getting him to lvl 45 instantly.
One major note!!!
If you have upgraded the hero's skill that exp will not move over. The same is true for any souls spent on transgress or passive skills.
Say your heros are maxed on their levels and you dont have enough souls to upgrade transgress and increase max level.
If you have an epic exp card sacrifice any other exp cards you get to the epic one until you can lvl up your heros again. Epic exp will just add the exp of any card you sacrifice to its own. For example, if you sacrificed 14 green, 8 blue, and 3 purple exp cards to your epic card, it would be worth a total of 3150 exp or 1200(base) + 350(green) + 640(blue) + 960(purple)