Though three-planet combinations excite with their promise of concentrated meaning and power, their complexity often severely impedes clear and useful interpretation. Starting with Vettius Valens’ three-planet interpretive text as a basis, we will explore all 36 combinations of the seven visible planets. In order to make this mass comprehensible, we will break them down into families based on commonalities between the constituent planets, with a special eye toward malefics, benefics, sect, and elemental qualities. Finally, we’ll pull in specific instances of three-planet combinations from adjacent texts, as well as three-planet yogas from Vedic astrology for further illumination.