Zack Snyder is clearly excited for the new Star Wars movie, Rogue One. Earlier this week he released a picture of Batman holding a lightsaber, and now we know why! He was cutting a Batman v Superman: Dawn of Justice trailer filled with Star Wars Easter eggs.

Snyder posted the video above on the mobile social network Vero with the caption “Dark Side Knight v Superjedi. In anticipation of Rogue One, I wanted to share a little Star Wars fan film I made after JJ released his Hunka Junk mash-up… long overdue”.

Update: According to Batman v Superman: Dawn of Justice cinematographer Larry Fong, Snyder cut together the trailer above over a year ago. Hopefully the trailer he’s working on right now is that new Justice League trailer that keeps getting teased!

The video Snyder is referencing is from his 2014 Twitter war with Star Wars director J.J. Abrams. Abrams released a video showing how the Millennium Falcon compared to a Batmobile.