Ugin's Nexus
Legendary Artifact
If a player would begin an extra turn, that player skips that turn instead.
If Ugin's Nexus would be put into a graveyard from the battlefield, instead exile it and take an extra turn after this one.
Printings & Conditions (1)
Khans of Tarkir (KTK)(Khans of Tarkir)#227Mythic