execute as @e[type=spider,tag=!plussed,predicate=survivalplus:20chance] run effect give @s weaving infinite 0 true
execute as @e[type=spider,tag=!plussed] run data merge entity @s {Health:30,attributes:[{id:"knockback_resistance",base:0.5f},{id:"max_health",base:30f},{id:"armor",base:8f},{id:"movement_speed",base:0.4f},{id:"attack_damage",base:4.2f}]}
execute as @e[type=spider,tag=!plussed] run tag @s add plussed