Farming iso

Do anyone know how to get a lots of iso like to take a 4 star champ to r4 in two days

Comments

Visa guranteed to get you to r5 too
Mastercard is an alternative too

Without spending real money i.e by doing quests

Well you can get a lot of iso by beating act 4 venom on short path again and again

Which chapter and quest??
I have just completed chapter 2

Then you can't do him. Go for thanos in 3.4.6

How iso I will get approx?? Magik is my first mystic champ I wanna take her to r4 in a week

Not sure myself lol. Other people told me that.
I am in act 3 chapter 2

I will ask my alliance mates. Thank you