Minecraft 1.12+ Iron Golem Spawner by zzxbatubeyxzz

Step One: Get Command Block

/give @p minecraft:command_block

Step Two: Get Mob Spawner

/give @p minecraft:mob_spawner

Step Three: Go to the https://hastebin.com/ozeyudabid

Step Four: Put a button and right click

Step Five: Put the Mob Spawner with the Given Item