Aspects-Celestia-Compat/bin/main/data/aspects/powers/darkness_damage.json

{
    "type": "origins:action_when_damage_taken",
    "entity_action": {
        "type": "origins:damage",
        "amount": 2
    },
    "damage_condition": {
        "type": "origins:name",
        "name":"wither"
    },
    "cooldown": 1,
    "name":"Darkness Damage",
    "description":"You take more damage from wither damage."
}