In the collapsed deck of fifty two, the King of Diamonds/Pentacles also goes with Fermentation/The Devil. The dichotomy between these two is the dharma to to make the world better versus corruption, which is where comes the archetype of Save.
In this card, Gabriel is preparing a physician for a car accident which has not occurred yet; by simply having the doctor ready to operate in the right place and time.
The Siren for the King of Pentacles as the direct ascent up the Tree of Life below 

76.♚🜃The Siren; Dharma;🧜‍♀️. Chokmah. Cross Section Between Daughter, Father, God and Man Point on MRKBH. On the Tree of Life this is the last part of our ChKMH, wisdom sephira, before beginning our ascent to the zenith of the Tree. In the familiar tarot this is the place of the King of Pentacles. Take your prima materia with its nascent sulfur which is the fish; and take the common mercury which is the virgin. Mix in your philosophical mercury or White Queen and you have the siren. The fifth stage engraved by Merian for Mylius’ Philosophia Reformata has the soul birds burying the crown, like our triple crown of iron, gold and silver we’ve finally attained through our Kings, at the feet of the Microprosopus. And these perch upon the tree which is growing from this crown burying act. If King Baby has a problem with renouncing his crown the siren is here to drown our king again, even the righteous king of the triple crown. Because even a good guy's ego can be a bad thing. And in the Chymical Wedding there is no marriage without death. That’s basically the function of Arjuna whom Krishna knocks down a peg: dharma first. Days three hundred and twenty nine to three hundred and twenty two, walk back in reverse from your ideal goal. How do you keep your ego from getting in the way of this? Continue being open to new opportunities as a hidden answer.​