What's the range on how close you have to be? I haven't seen anything in the text that explicitly says it, and I haven't found any circle indicator. I assumed it would be experience range or something, but I think I've been noticing the little ! indicator pop up on minion deaths on some minions pretty close to me but not on others. I kill minions with the hammer throw and some give the ! and some don't?
Please help.
I didn't find the right solution from the Internet.