Add Magic Find Mechanics (gear that increases the rarity of dropped loot)

Please add a mechanic that allows players to find better loot through some form of investment, whether direct or indirect, and whether with drawback or not, so that loot does not become stale when exploring the world. The lack of control over natural progression becomes more awkward towards the end of the game where your best options are less held back by your enemies and skill level and more by pure luck.