Systematically donating assures that everyone gets the rewards for leveling up. If you level up multiple levels at a time, you only receive the last reward.
Whichever box suits your roster needs is the one to go for. Although you can’t go wrong as these players are better than regular 5-Star so they will send guys to the bench. The value at 30% pull rate is great!
It seems as those with a low win total relative to your level make you a beast. A high win total relative to your level makes it like you’re using a whiffleball bat
I’ve found that if I close the app out, reopen it, look at the “buy gold page” then close the app and repeat that the $69.99 Mountain offer pops up. It also seems to pop up more frequently if I visit the store too. Maybe every 10-12 times that I reopen it with the above and it will appear.