Storyline
Teferi, Jhoira, and Venser continue their battle to heal the time rifts that plague Dominaria. The rift in Tolaria is so severe that it cannot be healed in the present day. In order to remedy it, Karn travels back in time. He manages to close the time rift, but in the process is lost.
The planeswalker Jeska returns to Dominaria. Finding her friend Karn gone, she becomes angry and is manipulated by the planeswalker Leshrac into using Radha as a kind of mana focuser to close the time rifts without using up her planeswalker spark. She sets out to continue her mentor's work, and seals both the Zhalfirin and Yavimayan rifts, respectively losing Zhalfir proper and Multani in the process. It is revealed later on that Leshrac was using Jeska to gain the dark power of one of her former selves, Phage. Having gained that power, Leshrac then challenges the powerful planeswalker Nicol Bolas to a duel, only to be defeated by him. Bolas then uses what remains of Leshrac to seal the Madaran rift.
Once again in charge of her own actions, Jeska enters the Otarian rift to try and seal it with the help of both Venser and Radha. During their efforts, they merge to form an alternate version of Karona. At the final stage, Jeska teleports both Venser and Radha to a safe location, sacrificing herself to seal the final rift.
Read more about this topic: Future Sight