It seems like things are going to go even more awry as Oliver (Stephen Amell) assumes the role of member of League of Assassins.

Ra's Al Ghul Could Die In Season 3 Of Arrow 

The preview of the upcoming episode, titled 'This is Your Sword,' shows Ra's al Ghul (Matt Nable) demanding something completely crazy of Oliver. As the visuals roll by, with the voice-over featuring an interaction between Ra's al Ghul and Oliver, some shocking revelations are made.

"What do you wish me to do?" Oliver is heard asking.

'Evil Oliver' Is 'Going Out Fighting' In Finale, Stephen Amell Teases 

As the scenes move along, a nervous Diggle is seen down on his knees in front of Oliver, and Ra's al Ghul's voice plays in the backdrop, stating, "you must eliminate him."

In a recent interview with TVLine, showrunner Marc Guggenheim spoke about what fans can expect from the upcoming episodes after Oliver's move to the dark side.

Guggenheim revealed that this would be a very tough time for team Arrow in Starling City to know that Oliver is playing for the anatgonistic side now.

"The character journey of [Episode] 321 is how the hell Team Arrow moves forward without Oliver," Guggenheim said. He also added that "knowing that he's out there and alive, but a member of the League of Assassins, that's a whole lot harder."

'This is Your Sword' will air on The CW on April 29.

Watch the preview:

Tags: Arrow the cw television