During Nosgoths early Beta there was a Daily Rewards Wheel which appeared when you loaded Nosgoth each day, every day you logged in you would receive prizes, such as Gold up to Runestones and special skins.
There were seven days to the reward system, split into three tiers. As you logged in each day the reward value would increase.
When you reached the seventh day the system would issue one last high tier price and then reset to level one, returning you to the lowest tier of prizes and you would need to log in for the consecutive days to win better prizes again.
Part way through the Beta the Daily Rewards system was abolished and replaced with Daily Challenges.