The rod housed within the tomb is said to slumber the waking.
The Night Watch
Increases Cadu, Tomb Guardian's DPS by 1e2500%.
Ceus guards the tomb under the dark cloak of moonlight.
Twin Snakes (Ceus)
Increases Cadu, Tomb Guardian's DPS by 1e2900%.
The pharoah, however, understood that his fate would be to return to the tomb again, in time, to await a future rebirth.
Increases Cadu, Tomb Guardian's DPS by 1e3300%.
"There cannot exist light without shadows."
All of Ceus's upgrades are for his brother, Cadu, Tomb Guardian. Being the younger, his upgrades come at a higher level and has higher effects than his brother's respective upgrades.
Heroes tend to have a lower DPS/ Gold ratio at base (a.k.a. "efficiency") the stronger they get. However, Cadu, Tomb Guardian and Ceus have a higher efficiency than any other hero before them, making them incredibly useful. Although at this stage of the game, the scaling of the monsters health make it difficult for the twin brothers to do decent damage, progressing a few thousand zones each ascension.
He is one of the only 2 heroes to give a DPS bonus to another specific hero, with the other Cadu, Tomb Guardian.
The caduceus is the staff carried by Hermes in Greek mythology.