2x05 Trial by Fire: Episode 5

All the series from the Arrowverse in (hopefully) the right watching order

https://arrow.fandom.com/wiki/List_of_crossover_episodes

Episodes of TV Shows from the DC Comics Universe which are crossover episodes. Shows include "Arrow," "The Flash," "Vixen," "Supergirl," and "DC's Legends of Tomorrow."

List of crossover episodes referenced during the creation of this trakt.tv list: http://arrow.wikia.com/wiki/List_of_crossover_episodes