Wynncraft Horses in Vanilla Minecraft - One Command Block

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:fill ~2 ~-3 ~-2 ~8 ~-1 ~2 stained_hardened_clay 1 hollow},{id:commandblock_minecart,Command:fill ~2 ~-2 ~-2 ~8 ~-2 ~2 stained_glass 7 0 stained_hardened_clay},{id:commandblock_minecart,Command:setblock ~1 ~-3 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/give @p minecraft:saddle 1 0 {HideFlags:63,display:{Name:\\\\\\\"Brown Horse\\\\\\\",Lore:[Throw to spawn a Brown Horse]}}\\\"}}",Text2:"{\\\"text\\\":\\\"Click to get\\\"}",Text3:"{\\\"text\\\":\\\"A Brown H.\\\"}",Text4:"{\\\"text\\\":\\\"\\\"}"}},{id:commandblock_minecart,Command:setblock ~1 ~-2 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"\\\"}",Text2:"{\\\"text\\\":\\\"Click this to\\\"}",Text3:"{\\\"text\\\":\\\"DESTROY machine\\\",\\\"color\\\":\\\"red\\\",\\\"bold\\\":true}",Text4:"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"fill ~ ~-1 ~-2 ~7 ~1 ~2 air\\\"}}"}},{id:commandblock_minecart,Command:fill ~3 ~-2 ~-1 ~7 ~-2 ~1 chain_command_block 5},{id:commandblock_minecart,Command:setblock ~3 ~-2 ~ chain_command_block 3},{id:commandblock_minecart,Command:fill ~7 ~-2 ~ ~4 ~-2 ~ chain_command_block 4},{id:commandblock_minecart,Command:setblock ~7 ~-2 ~-1 chain_command_block 3},{id:commandblock_minecart,Command:setblock ~3 ~-2 ~-1 repeating_command_block 5},{id:commandblock_minecart,Command:blockdata ~6 ~-2 ~1 {auto:1,Command:/tp @e[tag=SummonBrown] @p}},{id:commandblock_minecart,Command:blockdata ~5 ~-2 ~1 {auto:1,Command:"/entitydata @e[tag=SummonBrown] {Item:{id:\\\"minecraft:saddle\\\",Count:1b,tag:{HideFlags:63,display:{Lore:[0:\\\"Throw to spawn a Brown Horse\\\"],Name:\\\"Brown Horse\\\"}}},PickupDelay:0}"}},{id:commandblock_minecart,Command:blockdata ~4 ~-2 ~1 {auto:1,Command:/execute @e[tag=DespawnBrown] ~ ~ ~ /kill @e[tag=BrownHorse]}},{id:commandblock_minecart,Command:blockdata ~3 ~-2 ~1 {auto:1,Command:/execute @e[tag=DespawnBrown] ~ ~ ~ /tp @e[tag=BrownHorse] ~ ~-300 ~}},{id:commandblock_minecart,Command:blockdata ~3 ~-2 ~ {auto:1,Command:/execute @e[tag=DespawnBrown] ~ ~ ~ /tp @a ~ ~0.001 ~}},{id:commandblock_minecart,Command:blockdata ~4 ~-2 ~ {auto:1,Command:/execute @e[tag=DespawnBrown] ~ ~ ~ /effect @e[tag=BrownHorse] minecraft:invisibility 5 5}},{id:commandblock_minecart,Command:blockdata ~5 ~-2 ~ {auto:1,Command:"/execute @e[tag=SummonBrown] ~ ~ ~ /summon horse ~1 ~ ~ {Tags:[\\\"BrownHorse\\\"],SaddleItem:{id:\\\"minecraft:saddle\\\",Count:1b},Variant:3,Tame:1,Attributes:[{Name:horse.jumpStrength,Base:0.7}],Invulnerable:1,PersistenceRequired:1,ActiveEffects:[{Id:6,Amplifier:255,Duration:200000000,ShowParticles:0b},{Id:11,Amplifier:255,Duration:20000000,ShowParticles:0b}]}"}},{id:commandblock_minecart,Command:blockdata ~6 ~-2 ~ {auto:1,Command:/execute @e[tag=BrownHorse] ~ ~ ~ /scoreboard players tag @e[tag=SummonBrown] remove SummonBrown}},{id:commandblock_minecart,Command:blockdata ~7 ~-2 ~ {auto:1,Command:/execute @e[tag=BrownHorse] ~ ~ ~ /scoreboard players tag @e[tag=SummonBrown] add DespawnBrown}},{id:commandblock_minecart,Command:blockdata ~7 ~-2 ~-1 {auto:1,Command:"/scoreboard players tag @e add SummonBrown {Item:{id:\\\"minecraft:saddle\\\",Count:1b,tag:{HideFlags:63,display:{Lore:[0:\\\"Throw to spawn a Brown Horse\\\"],Name:\\\"Brown Horse\\\"}}}}"}},{id:commandblock_minecart,Command:blockdata ~6 ~-2 ~-1 {auto:1,Command:/execute @a ~ ~ ~ /kill @e[tag=BrownHorse,rm=12]}},{id:commandblock_minecart,Command:blockdata ~5 ~-2 ~-1 {auto:1,Command:/execute @a ~ ~ ~ /tp @e[tag=BrownHorse,rm=12] ~ ~-300 ~}},{id:commandblock_minecart,Command:blockdata ~4 ~-2 ~-1 {auto:1,Command:/execute @a ~ ~ ~ /effect @e[tag=BrownHorse,rm=12] minecraft:invisibility 5 5}},{id:commandblock_minecart,Command:blockdata ~3 ~-2 ~-1 {auto:1,Command:/entitydata @e[type=horse] {FallDistance:0.0f}}},{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]}]}]}]}