Quote Originally Posted by namhoang909 View Post
yes by discharge plt unit(not sure if gold was in category too)
we actually have 4 unit from 400 to 1000 RC. last time i discharge plt unit from farming event is 3 RC, premium summoned unit will reward you more
You can discharge gold units (20RC for premium unit and 1RC for event unit). By the way (don't know if it's a bug or feature, but still), units from gold rush counted as premium ones.