Nephalem Valor
Nephalem Valor is a new system introduced in Diablo III. It is intended among other systems to make sure that the end game is fun and exciting and also that the game is balanced so a 3-minute run of the same area won't be the most efficient way to acquire loot.
Nephalem Valor is one of the major new systems in Diablo III and it kicks in at level 60. It is still in testing and Blizzard is still working out the details. Here’s how it currently works internally: Rare and Champion packs already have great loot on them. By killing a Rare or Champion pack, not only do you get their loot, but you’ll also receive a buff granting you increased magic find and gold find. However, if you change a skill, skill rune, passive, or leave the game, the buff disappears. As an extra reward, if you kill a boss while this buff is active, you’ll receive extra loot drops from that boss.
The exact amount of magic find and gold find provided by the buff is still being reviewed, as is the amount of extra loot you get from a boss while the buff is active. Blizzard is also playing around with whether or not the buff stacks, what the duration should be, and whether or not it should persist through death. The buff should be strong enough to make staying in your current game more rewarding than creating a new game. At the same time, if the buff is too strong, it risks making shorter play sessions feel not worthwhile.
This system is expected to encourage players to stick with a skill build of their choice, select an area of the game they enjoy, and sweep it for rare and champion packs on their way to a boss, finishing off a run with a boss that’ll be worth killing. If you wanted a shorter play session you could be done at that point, but if you have more time, the path of least resistance would ideally be to stay in the same game and make your way towards the next boss.
