ElderGuardianSpawner

15w51b
/give @p mob_spawner 1 0 {BlockEntityTag:{MaxNearbyEntities:0s,RequiredPlayerRange:6s,SpawnCount:1s,Delay:-1s,MinSpawnDelay:-200s,MaxSpawnDelay:-200s,SpawnRange:0s,SpawnPotentials:[{Weight:1,Entity:{Pos:[0d,-1000d,0d],id:Guardian,Elder:1b,Rotation:[0f,0f],DeathTime:19s}}]}}