After me and my Friend lost a raid, because every single Villager despawned after a first raid, he "became" a village. Random Village-relatet stuff startet spawning when he was standing still. Randomly Evokers, Ravangers or Pillagers (without a crossbow) spawned. He even got a Raid on him. Then the second time, he got raided by Pillagers, his effect "doubled". When he got into the nether, the Wither would spawn if he was standing still. In the End dimension the Ender Dragon spawned, without the end Crystals spawning or the bossbar getting shown.