Darth Vader learned a powerful technique from Jedi Master Tsui Choi that nearly killed him but later became his own weapon. The Force-powered debris-hurling technique used by Tsui Choi and other Jedi was so effective that even Emperor Palpatine incorporated it into Darth Vader's training. Vader's encounter with Tsui Choi's group in Star Wars: Purge was a turning point, leading him to adopt the technique and use it against his own son, Luke Skywalker.

Darth Vader has proven time and again that he is one of the most powerful Force-users in the Star Wars galaxy, and while a great deal of that comes from his former Jedi training and his inherent strength in the Force, a lot of what makes him so hard to beat came from the techniques he learned from his enemies while fighting them. In fact, there’s one technique in particular that made Vader especially formidable,...