Take a look @ more extended footage, plus images from the "Arrow" Season 5 finale episode, "Lian Yu", written by Wendy Mericle, Marc Guggenheim and directed by Jesse Warn, that aired May 24, 2017 on The CW:
"...'Deathstroke', 'Nyssa Al Ghul', 'Merlyn' and 'Digger Harkness', join with 'Oliver' in the battle against 'Prometheus'.
"The fight between Oliver (Stephen Amell) and 'Adrian Chase' (Josh Segarra) culminates in a final epic battle on 'Lian Yu'. After recent events, Oliver decides to recruit a group of unlikely allies - 'Slade' (Manu Bennett), 'Nyssa' (Katrina Law), 'Merlyn' (John Barrowman) and 'Digger Harkness' (Nick. E. Tarabay) - to defeat 'Chase'.
"However, Chase has his own army - 'Black Siren' (Katie Cassidy), 'Evelyn Sharp' (Madison McLaughlin) and 'Talia al Ghul' (Lexa Doig) - and the forces collide in an explosive season finale..."
Click the images to enlarge and Sneak Peek "Arrow: Lian Yu"...