Horus as bright as the sun was explained by a tale, known as "The Contendings of Horus and Seth". In this tale, it was said that Set, the patron of Upper Egypt, and Horus, the patron of Lower Egypt, had battled for Egypt brutally, with neither side victorious, until eventually the gods sided with Horus. As Horus was the ultimate victor he became known as "ḥr.w wr" "Horus the Great", but more usually translated "Horus the Elder". In the struggle, Set had lost a testicle, and Horus's eye was gouged out. Horus represented the eclipsing binary Algol in the Calendar of
Horus Heresy (card game) writers. The game is set during the Horus Heresy, a galaxy-wide civil war and cornerstone event of the far future fictional universe that is the campaign setting of Games Workshop's "Warhammer 40,000" wargame system. The war is set in motion by Horus, previously Warmaster (supreme military commander) of the Imperium of Man and favorite of the Emperor. The setting for each game set (base or expansion) is limited to a single significant battle or confrontation in the Heresy conflict. However the sets as a collection broadly cover the entire span of the campaign, from its earliest major battle to the