execute as @e[type=zombie,tag=id13_mob] at @s run tp @s @s
tag @s add id13_attack_string_hit_2
scoreboard players reset @s iframes
function main:mechanics/damage/player/damage {"damage":100,"id":id13,"id_number":13}

execute as @n[type=zombie,tag=id13_mob] at @s run summon marker ^ ^-1 ^-3 {Tags:["directional_knockback"]}
execute as @s run function main:mechanics/movement/directional_knockback/calc {"marker":"directional_knockback","strength":-0.5}