So finally trying to get games going. Have what I know should be a basic question but I am failing to find an example to explain it. When it is saying "Can make a check vs. creatures x DC", what is actually happening with the dice to determine that check? Specific example. If Goblin Dog has Will +5, and you want to attempt Command an Animal. It says attempt a nature check vs creatures Will DC. PC has +2 Nature profeciency. Who rolls what? I can't seem to find any example of this. Does this mean the GM rolls a D20 and adds 5, and the player rolls a D20 and adds 2, and if PC is higher, PC wins the check? Or does this mean only the player rolls a D20 and has to beat a 5? Or is it a 10 and add 5 to it so player needs to roll a 15? Kind of confused here on something that I know is a basic concept of the system.