6. A toki (adze) is a proper tool for a King (cfr at Toki):

Toki

Small basalt axe. Stone adze. Ha'amoe ra'a toki = 'Put the adze to sleep' (i.e. hide it in the temple during the night). Month of the ancient Rapanui calendar.

To'i. T. Stone adze (e to'i purepure = with the wounderful adze).

The Araukan Indians in the coastal area of northern Chile, have customs similar to those on the Marquesas and in both areas toki means adze according to José Imbelloni. The Araukans also called their chief of war toki and the ceremonial adze symbolized his function and was exhibited at the outbreak of war. In Polynesia Toki was the name of a chief elevated by the Gods and his sign was the blade of a toki.

Axe, stone hatchet, stone tool ...; maea toki, hard slates, black, red, and gray, used for axes T. P Pau.: toki, to strike, the edge of tools, an iron hatchet. Mgv.: toki, an adze. Mq.: toki, axe, hatchet. Ta.: toi, axe.

(Picture of toki from Alpers, Legends of the South Seas.)

Instead of the bit for a non-present horse the Sun King has a single great 'tooth' in the form of a well-formed (ra'a) toki blade.

Raka

Smooth, level, polished, without asperities, without roughness; ka raka te aga, let it be a perfect piece of work, with a smooth shape and surface. Vanaga.

Holy, Mgv.: raka, to profane, defiled. Ta.: raa, holy. Ha.: laa, id. Churchill.

And after the Rain God had payed a visit down in the earth he seems to have worked his way out and up, higher and higher, by using his hatchet:

The beginning of the ancient month Toki could possibly have coincided with the rise of Canopus.