Because this is owner, and not controller, that means you can kill people off if you roll a 20 and can kill off the chosen Creature
Leyline of the Guildpact has some utility in Commander too, where cards like The Mana Rig, Fallaji Wayfarer, Hero of Precinct One, and Rienne, Angel of Rebirth might fit together with the Leyline in a Jenson Carthalion, Druid Exile deck
Illustrated by Kei Satsuki Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
I think that not only will we see new Nicol Bolas decks pop up on the basis of this card, well see people dust off their old Nicol Bolas decks
While it's in play, if a Creature you control with power one or less dies, you may return it to the battlefield at the beginning of the next end step if Shirei is still on the battlefield
We dont play Leyline of the Void in Limited, and that cards free sometimes