/summon FallingSand ~ ~1 ~ {Block:redstone_block,Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:fill ~ ~0 ~1 ~ ~-11 ~1 redstone_block},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:setblock ~ ~3 ~1 stone},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:setblock ~ ~4 ~ command_block 0 replace {Command:fill ~ ~2 ~ ~ ~-15 ~1 air}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:scoreboard objectives add hasJumped stat.jump },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:scoreboard objectives add waterTime dummy },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:scoreboard objectives add sneak stat.crouchOneCm },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/summon FallingSand ~2 ~ ~-1 {Block:command_block,TileEntityData:{Command:execute @e[type=Snowball,name=wave] ~ ~ ~ fill ~ ~ ~ ~ ~ ~ water 7 replace air },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:execute @a[score_hasJumped_min=1,rym=-125,ry=-40] ~ ~ ~ summon Snowball ~1 ~0.5 ~ {CustomName:wave,Motion:[0.6,0.2,0.0]} },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:execute @a[score_hasJumped_min=1,rym=125,ry=-125] ~ ~ ~ summon Snowball ~ ~0.5 ~-1 {CustomName:wave,Motion:[0.0,0.2,-0.6]} },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:execute @a[score_waterTime_min=1] ~ ~ ~ fill ~ ~ ~ ~ ~ ~ water 5 replace air },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:scoreboard players set @a[score_hasJumped_min=1,score_waterTime=0,rxm=-90,rx=-90] waterTime 20 },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:scoreboard players remove @a[score_sneak_min=100] sneak 99 },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:scoreboard players remove @a[score_sneak_min=1] sneak 1 },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:},Time:1,}}}}}}}}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:/summon FallingSand ~2 ~ ~1 {Block:command_block,TileEntityData:{Command:scoreboard players remove @a[score_hasJumped_min=1] hasJumped 1},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:execute @a[score_hasJumped_min=1,rym=40,ry=125] ~ ~ ~ summon Snowball ~-1 ~0.5 ~ {CustomName:wave,Motion:[-0.6,0.2,0.0]} },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:execute @a[score_hasJumped_min=1,rym=-40,ry=40] ~ ~ ~ summon Snowball ~ ~0.5 ~1 {CustomName:wave,Motion:[0.0,0.2,0.6]} },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:scoreboard players remove @a[score_waterTime_min=1] waterTime 1 },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:tp @a[score_waterTime_min=1] ~ ~0.5 ~ },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:scoreboard players add @a waterTime 0 },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:scoreboard players remove @a[score_sneak_min=10] sneak 9 },Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:execute @a[score_sneak_min=1] ~ ~ ~ fill ~ ~-1 ~ ~ ~-1 ~ ice 0 replace water },Time:1,}}}}}}}}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:gamerule commandBlockOutput false},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:fill ~2 ~-2 ~ ~2 ~6 ~ redstone_block},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:setblock ~2 ~-1 ~-1 command_block 0 replace {Command:fill ~ ~ ~1 ~ ~8 ~1 stone 0 replace redstone_block}},Time:1,Riding:{id:FallingSand,Block:command_block,TileEntityData:{Command:setblock ~2 ~ ~1 command_block 0 replace {Command:fill ~ ~ ~-1 ~ ~8 ~-1 redstone_block 0 replace stone}},Time:1,Riding:{id:FallingSand,Block:stone,Time:1}}}}}}}}}}}}}}