Example DCs

Difficulty	DC	Examples
Mundane	0	Identifying something common, like crops
Requires Focus	5	Identifying something common, but more specific like clay
Trained	10	Determine if a weather effect is magical Determine when an egg will hatch Identifying specific common species/substances like rose or coal Determine the nature of "natural" phenomenon: this river was dammed by a beaver, volcanic debris killed these plants, natural substances leaked into this water to make it toxic
Difficult	15	Determine if a small scale instance is "unnatural," such as if a creature had alchemical augmentations Identify specific uncommon species/substances like sequoia or gold
Very Difficult	20	Figure out the days weather, and figure out the origin of anomalous weather Identify endangered/extinct species or rare/depleted resources like dodo or diamond Determine if a large scale instance is "unnatural," such as if a forest was dying via the intervention of malicious creatures
Masterful	25	Determine the nature of "unnatural" phenomenon, such as what the source of is pollution, why the rain/river stopped, low fish population
Nearly Impossible	30	Figure out tomorrow's weather
Ascended	40	Identify the properties of entirely new species/substances Predict natural disasters a week in advance

Common modifiers to make the task more difficult can include… >Unable to interact with object (smell, taste, touch, as appropriate for substance)

Common modifiers to make the task less difficult can include >Guides, handbooks and sketches