scoreboard players add @s DespawnTimerKyu 1
tag @s[scores={DespawnTimerKyu=10..}] remove RemovePersist
data merge entity @s[scores={DespawnTimerKyu=10..},tag=!CadeyrnTP,tag=!KeepPersist] {PersistenceRequired:0}
scoreboard players set @s[scores={DespawnTimerKyu=10..}] DespawnTimerKyu 0