Leveling skill

[sick scarab]

How do I level up "Shadow" ?
I cant seem to figure how to do it, do I have to kill a specific mob or explore a specific dungeon?

[edgy bridge]

Killing dread mobs from ice and fire, killing villagers and goblin traders, crafting items such as straw effigies

[sharp oak]

craft straw effigies

[lost hound]

Specifically villager guards, villagers don’t give any shadow for some reason