Just watch this video and you will see these 2 things that needs to be fixed right now. Until that happans it is a 1 way ticket to win a duel.

https://www.youtube.com/watch?v=zUJhcQMhZ_M&t=1036s

The 1 guys says it needs to be in the game but it should not be. In duels it is too overpowered. Lets say the assassins. They lights are all ready quick and if they use light faints they just kill the fun out of the game.