RDF stands for Random Dungeon Finder in World of Warcraft-(RDF).html). It is a tool that was introduced in the Wrath of the Lich King expansion that allows players to fill their group for specific or random dungeons. With the RDF, instances not only got a new reputation, but gained an even greater importance than before, since instances are now faster to access and frequent visits to instances have become a popular way of leveling in the game. RDF is essential in order to learn to play your class and is needed at this state of the game in order to level in a sustainable amount of time. However, RDF is a double-edged sword. On one hand, it makes it extremely convenient to queue for a dungeon regardless of where you are or what youre doing. On the other hand, it kills the RPG part of the game since you just need to press a button and a group is automatically made and you are ready to clear a dungeon. In WoW Classic, RDF was not included at launch but was later added to smooth out the dungeon leveling experience.