Doesn't need a triggerword.

If you should need to reeinforce the concept: try "in the style of a pencil/ink drawing on toned paper", "photo" in negative

Note: i initially mislabeled this as Pony Xl Lora. This is the SDXL Version. A Pony Version is here: https://civitai.com/models/382919?modelVersionId=447917