command /efekty:
    open chest with 2 rows named "&6&lEFEKTY" to player
    set {_} to 0
    loop 18 times:
        set slot {_} of player's current inventory to gray glass pane named " "
        add 1 to {_}
    set slot 2 of player's current inventory to sugar named "&7&lSPEED&7(&58Min&7)" with lore "&7Koszt &8&l>> &664 Szmaragdy"
    set slot 4 of player's current inventory to blaze powder named "&7&lSILA&7(&54Min&7)" with lore "&7Koszt &8&l>> &6128 Szmaragdy"
    set slot 6 of player's current inventory to fire charge named "&7&lFIRE RESISTANCE&7(&58Min&7)" with lore "&7Koszt &8&l>> &664 Szmaragdy"
    set slot 13 of player's current inventory to Fire named "&5&lWYJDZ"
on inventory click:
    if inventory name of player's current inventory is "&6&lEFEKTY":
        cancel event
        if clicked item is sugar named "&7&lSPEED&7(&58Min&7)" with lore "&7Koszt &8&l>> &664 Szmaragdy":
            if player has 64 emeralds:
                remove 64 emeralds from player
                remove speed from player
                wait 1 tick
                apply speed to player for 8 minutes
                broadcast "&7Gracz &6%arg 1% &7Kupil Efekt &9Szybkosci."
            else:
                send "&6Nie Masz &464 Szmaragdow" to player-arg
        if clicked item is blaze powder named "&7&lSILA&7(&54Min&7)" with lore "&7Koszt &8&l>> &6128 Szmaragdy":
            if player has 128 emeralds:
                remove 128 emeralds from player
                remove strength from player
                wait 1 tick
                apply strength to player for 4 minutes
                broadcast "&7Gracz &6%arg 1% &7Kupil Efekt &9Sily."
            else:
                send "&6Nie Masz &4128 Szmaragdow" to player-arg
        if clicked item is fire charge named "&7&lFIRE RESISTANCE&7(&58Min&7)" with lore "&7Koszt &8&l>> &664 Szmaragdy":
            if player has 64 emeralds:
                remove 64 emeralds from player
                remove fire resistance from player
                wait 1 tick
                apply fire resistance to player for 8 minutes
                broadcast "&7Gracz &6%arg 1% &7Kupil Efekt &9Sily."
            else:
                send "&6Nie Masz &464 Szmaragdow" to player-arg
        if clicked item is Fire named "&5&lWYJDZ":
            close player's inventory