Spawners

setblock ~ ~1 ~ mob_spawner 0 replace {SpawnCount:5,SpawnRange:20,Delay:-1,MinSpawnDelay:0,MaxSpawnDelay:1,MaxNearbyEntities:32767,RequiredPlayerRange:32767,SpawnPotentials:[{Type:"Arrow",Weight:1,Properties:{Motion:[0.0,3.0,0.0]}}]}

setblock ~ ~1 ~ mob_spawner 0 replace {SpawnCount:1,SpawnRange:6,Delay:-1,MinSpawnDelay:10,MaxSpawnDelay:10,MaxNearbyEntities:32767,RequiredPlayerRange:32767,SpawnPotentials:[{Type:"FallingSand",Weight:1,Properties:{Time:1,Block:"minecraft:fire",Motion:[0.0,1.0,0.0]}}]}

setblock ~ ~1 ~ mob_spawner 0 replace {SpawnCount:1,SpawnRange:4,Delay:-1,MinSpawnDelay:10,MaxSpawnDelay:10,MaxNearbyEntities:32767,RequiredPlayerRange:32767,SpawnPotentials:[{Type:"FallingSand",Weight:1,Properties:{Time:1,Block:"minecraft:fire",Motion:[0.0,1.0,0.0]}}]}