The Mandalorian featured a weapon that hardcore Star Wars fans are going to be really excited about.
The Darksaber was stolen by Darth Maul in the Clone Wars and then in Rebels, Mandalorian Sabine Wren took over on the black blade.
There are SPOILERS for The Mandalorian season 1 finale below, so read ahead at your own risk.
Another way that the Darksaber is able to show up in The Mandalorian could be because Moff Gideon was able to convince some Mandalorian members to fight for the Empire along his side.