Gamerules

summon falling_block ~ ~1 ~ {Block:stone,Time:1,Passengers:[{id:falling_block,Block:redstone_block,Time:1,Passengers:[{id:falling_block,Block:activator_rail,Time:1,Passengers:[{id:commandblock_minecart,Command:gamerule commandBlockOutput false},{id:commandblock_minecart,Command:gamerule keepInventory true},{id:commandblock_minecart,Command:gamerule commandBlockOutput false},{id:commandblock_minecart,Command:gamerule doDaylightCycle false},{id:commandblock_minecart,Command:gamerule doFireTick false},{id:commandblock_minecart,Command:gamerule doMobSpawning false},{id:commandblock_minecart,Command:gamerule mobGriefing false},{id:commandblock_minecart,Command:gamerule sendCommandFeedback false},{id:commandblock_minecart,Command:gamerule doWeatherCycle false},{id:commandblock_minecart,Command:gamerule spawnRadius 0},{id:commandblock_minecart,Command:"tellraw @a [\"\",{\"text\":\"Done.\",\"color\":\"gold\",\"bold\":true}]"},{id:commandblock_minecart,Command:setblock ~ ~ ~1 command_block 0 0 {Command:fill ~ ~-3 ~-1 ~ ~ ~ air}},{id:commandblock_minecart,Command:setblock ~ ~-1 ~1 redstone_block},{id:commandblock_minecart,Command:kill @e[type=commandblock_minecart,r=1]}]}]}]}



To Edit:
INIT:gamerule keepInventory true
INIT:gamerule commandBlockOutput false
INIT:gamerule doDaylightCycle false
INIT:gamerule doFireTick false
INIT:gamerule doMobSpawning false
INIT:gamerule mobGriefing false
INIT:gamerule sendCommandFeedback false
INIT:gamerule doWeatherCycle false
INIT:gamerule spawnRadius 0
INIT:tellraw @a ["",{"text":"Done.","color":"gold","bold":true}]