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simply run these three commands in a clock:
/execute @a ~ ~ ~ detect ~ ~-1 ~ sea_lantern 0 /effect @p 11 1 25
execute @a ~ ~ ~ detect ~ ~-1 ~ air 0 /effect @p 8 1 128
execute @a ~ ~ ~ detect ~ ~-1 ~ sea_lantern 0 /summon Creeper ~ ~ ~ {Fuse:1,NoAI:1,ExplosionPower:500}
this last one can be repeated as many times as you would like, as each time you repeat it it will increase the height of the jump
now just place your sea lanterns down all over your map, and have fun!