Dithyandli
From Warhammer 40k - Lexicanum
The great Dithyandli are competitions of martial strength between the Guardians of different Craftworlds, where champions are sent to battle one another.[1]
It is unclear how many craftworlds participate or how often the games take place, but Ulthwé and An-Iolsus are among those who competed when the event occured in mid-M40.[1]
Source
- 1: Shadow Point (Novel), Chapter 3