The War of the Spark set features the culmination of Nicol Bolas' plan and the storyline focuses on the battle unfolding on Ravnica "between the evil Nicol Bolas, the youngest and most powerful of Magic’s seven Elder Dragons, and the Gatewatch, a loose alliance of Planeswalkers fighting on the side of good".[6] Over the course of previous sets, Bolas has been enacting parts of his plan: during the Kaladesh block, "he stole a planar portal that would allow him to transport non-natural materials between worlds"; during the Amonkhet block, he "collected an army of zombified and embalmed warriors known as Eternals"; during the Ixalan block, "he collected the Immortal Sun, a powerful tool that is designed to prevent Planeswalkers from travelling between worlds"; and finally during the Dominaria set, he brought the Planeswalker and Gatewatch member Liliana Vess under his sway