In B/X D&D the game paints a very interesting picture of the Cleric character class. While the original concept was from Peter Cushing's Van Helsing, the list of spells and magic items for Clerics suggests another strong influence: snakes.
Snake-like spells include:
Speak with Animal
Growth of Animals
Sticks to Snakes
Neutralize Poison and one of the limited number of magic weapons a Cleric can use:
Considering the Snake Cult from the Original Conan movie, and a number of other pop-culture Fantasy/Snake ideas from the early 1980s it might be interesting to make play Clerics in this way.