execute if data storage bordercraft:once {adv:{adv__end__dragon_egg:1b}} run return 0
data modify storage bordercraft:once adv.adv__end__dragon_egg set value 1b
scoreboard players add @s bc_contrib_adv 1
scoreboard players add @s bc_contrib_total 1
scoreboard players add Adv/125 bc_side 1
function bordercraft:expand
