summon marker ~ ~ ~ {Tags:["unspellable","cobweb_decay","attack","EB","init"]}
scoreboard players set @e[tag=cobweb_decay,tag=init,limit=1] countdown 60
tag @e[tag=cobweb_decay,tag=init,limit=1] remove init

effect give @s slowness 3 255
advancement revoke @s only attacks:projectile_hit/spit_lock
