Do you play a lot of Pox Nora? Here is your chance to get Path of De'lim Midterm runes just by playing as much as possible. http://forums.poxnora.com/index.php?threads/path-of-delim-midterm-challenge.19131/ Also, for more discussion topics we deployed a small hotfix today. http://forums.poxnora.com/index.php?threads/hotfix-october-7th-2015.19130/
PVE does not have the 10 minute duration, but it is still subject to the standard match qualifications for getting rewards. So, you can't just launch and end matches, but you don't have to win. Remember, it is the most matches played not the most wins.
Because game ends if you do nothing. If you have nothing better to do than making moves and playing yourself then well ggwp.