Server Ready 1.11 - 1.12

/summon falling_block ~ ~1 ~ {Time:1,Block:hardened_clay,Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/fill ~ ~-2 ~ ~ ~14 ~ air"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule doDaylightCycle false"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule doFireTick false"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule doMobLoot false"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule doMobSpawning false"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule doTileDrops false"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule keepInventory true"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule logAdminCommands false"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule mobGriefing false"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule reducedDebugInfo true"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule sendCommandFeedback false"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule showDeathMessages false"},Passengers:[{id:falling_block,Time:1,Block:chain_command_block,TileEntityData:{Command:"/gamerule commandBlockOutput false"},Passengers:[{id:falling_block,Time:1,Block:command_block,TileEntityData:{Command:"/say Your server's gamerules are now set!"},Passengers:[{id:falling_block,Time:1,Block:redstone_block}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}