on mine of sponge:
    execute console command "effect %player% haste 255 5"
    send "&8[&bSlowdown&8] &7You have received haste 5 from mining a lucky block for &e10 seconds!"
    wait 5 seconds
    send "&8[&bSlowdown&8] &65.."
    wait 1 second
    send "&8[&bSlowdown&8] &e4.."
    wait 1 second
    send "&8[&bSlowdown&8] &33.."
    wait 1 second
    send "&8[&bSlowdown&8] &c2.."
    wait 1 second
    send "&8[&bSlowdown&8] &41.."
    wait 1 second
    send "&8[&bSlowdown&8] &cYou're time has ran out!"
    execute console command "effect %player% haste 00"