Ridiculous 3* Rare Power Leveling

1 at a time

Started with Mnesseus at 1/8 3* 1.1 this afternoon.

I fed 1 at a time, same color ( green) and Mnesseus was 7/8 at 3* 2.20

Then switched to 10 at a time, rainbow.

3x green 3* heroes

This seems to be the biggest problem. Too many greens.

Skill increases

Just RNG. My Elena was crazy fast.