Just an idea, maybe a future event that has tickets that we can use in an event shop could sell Runes, with a limit on how many you could buy. They could range from Greater to Superior and have different star ratings, with more powerful runes costing more tickets. They could even sell Champion runes for a higher price, like 15,000 tickets, whereas a normal Power rune would be only 5,000.
What do you guys think?
Favorite hero: Bovus
Favorite element: Nature
Currently: Trying to max out Epics