Environmental Magic

Affects environments (not THE environment)

Used on separate environments, or "areas" as small as a person's head to as large as a house. Usually only used for enhancement and the like (enhancing effects of medicinal plants, enhancing the atmosphere of an area.) It plays largely on biological matter

Depends

Affects various biological organisms of a certain size in a certain way to overall affect the "environment"

Can be unpredictable in how it changes things nearby, sometimes things happen for the worse (for example, enhancing a medicinal plant might end up causing an overdose). It can deplete health of user if not careful

Depends

Can cause tingling in organisms depending on strength

Depends

Human's body, resistance of affected organisms, complexity of area (a beach would be easier than a crowded street)

Knowledge, control, restraint, focus

Depends