/
custom list to mob_scaling object in scaling attributes, which allows a scaling expression to be set for mobs in a given tag. Only a single tag is accepted currently; no entity IDs. See the new "Example" data pack under optional_data_packs on GitHub for a full example file.
"custom": [
{
"entity_tag": "minecraft:skeletons",
"expression": "base_value * 0.5 * FLOOR((level - 26) / 25)"
}
]

A successor to Scaling Health. Adds a new difficulty system. Both mobs and players can gain attribute bonuses, such as extra health.