Living End wants to fill the graveyard with creatures via cycling and evoke (Street Wraith, Wistfulness) then cascade (Shardless Agent, Violent Outburst) into Living End to reanimate them all at once, making graveyard and cascade hate our best tools. Soulless Jailer stops players from casting noncreature spells from exile, completely preventing them from casting Living End off cascade. Soul-Guide Lantern can proactively exile their graveyard before Living End resolves, and Vexing Bauble counters Living End whenever it is cast for free off cascade, giving us cheap disruption searchable off Urza's Saga. We trim Sowing Mycospawn since it doesn't interact with their core combo and we need maximum disruption on the battlefield as early as possible.