Teferi, mago de Zhalfir

Teferi is a Jamuraan planeswalker who studied at the Tolarian Academy. He was caught in a slow-time bubble after the temporal disaster there, but was rescued by Jhoira, Urza Planeswalker, and Karn. He later became a royal mage of his homeland Zhalfir and ascended to become a planeswalker (though he was not originally aware of the change at the time). He became a guardian of Jamuraa, although his experiments with the time streams indirectly caused the Mirage Wars. When the Phyrexian Invasion broke out he phased out northwestern Jamuraa and parts of Shiv to save them from the war. He returned over a century later to discover Dominaria in ruins and plagued with time rifts, which he quickly set about trying to close. In order to safely phase back Shiv, Teferi had to sacrifice his planeswalker status. Whether this is permanent remains to be seen.