Player (in Reality Fracture Draft) was able to make two token copies of a legendary creature which remained in play, despite that the copying spell doesn't provide an exemption to the legendary rule.
The creature was Ruric Gar, Biomagus and the copying spell was Face Yourself. Player also copied Face Yourself with Way of the Cryomancer.

So there were a total of three Ruric Gar instances in play. I took a screenshot to show the boardstate - there are no cards on the board that provide an exemption to the legendary rule.
Unless I'm missing something, this shouldn't have been possible.
It's an excellent play, but would only be able to multiply the non-legendary creatures.