Regulation 45-C: Elemental Interaction Personnel are prohibited from attempting to utilize localized elemental entities (Water, Fire, Air, Earth) to resolve resonance-based emergencies without the supervision of a Class-1 Ward-Master.

Alistair’s Translation: 45-C exists because some bright spark once tried to put out a localized ghost-fire by summoning a water elemental from the Thames. He didn't just put the fire out; he flooded three blocks of [[Mayfair]] and turned the basement into an oyster bed.