It is assumed that the scythe is a North-Thracian invention, having the center inside the Carpathian arch, and from the scythe was subsequently developed the national weapon of the Dacians, the DACIAN FALX – the curved sword. The Falx is a kind of scythe, more or lesss curved at the tip, slightly smaller then the long, curved sarmatian swords. It is the typical weapons for the Dacians, and this is why it appears on numerous imperial monuments and coins in the centuries II-III a.c. It is abundantly illustrated on Trajan’s column and Adamclisi monument. The scarcity of the number of swords found at the archaeological sites shows the importance they had as war booty, but even so, sword or sword fragment were found in nearly all the important forts where research was conducted. This shows the actual number of the artifacts that existed in the maximum flourishing period of the Dacian state.

The multitude of representations of this specific weapon indicate it popularity in the arsenal of the antique world and the impact which this weapon had in the battless that the Dacians fought, either in Dacia or somewhere lesse where it accompanied its bearers. One example is given by an inscription on a building in the fort of the 1st Cohort Aelia Dacorum. This inscription with a relief representing the Dacian sword contains the name of the tribune Claudius Menander, who insisted to emphasize its Dacian heritage by the link to the Dacian sword. Moreover, one of the legions which participated in the Dacian wars and stationed in the Sarmizegetusa area for surveillance, sculpted the name of the unit on a marble block with letter with the curved sword shape.

It is very probable that, at the origin, Falx Dacica was a simple tool, used at the ingathering of the crop, and that it evolved because of the double role of the Dacian peasant, often forced to change the agricultural tools for the arms. This is also the reason for which the FALX is used preponderantly by the pedestrian army. The apparition of the curved sword in its consecrated form coincides with the passage from the Bronze Age to the Iron Age, metal more fitted for such a weapon-tool.

This weapon is found in all Getae-Dacian regions, being exported also in the Celto-German and Sarmatian worlds. It had a long and narrow blade, sharpened on the concave side and had a wooden or bone handle, very good for cutting and cutting through and less for jabbing.

Some samples have blood grooves and engravings. The shorter variant was called “Sica” (in the Dacian language) and the long one (with an average length between 0.60-0.70 m) was called FALX (in latin language). The Falx was curved towards the front third, which made is especially effective against the enemy legs and ligaments.

The FALX by itself was a frightful weapon: the curved blade similar to a bill-hook, at the end of a wooden handle was proven to be a lethal weapon in the hands of a good warrior and all the populations around the Dacian territory learned to fear it.

In the traditional witchcraft, as well as for rituals and common magic works, the sica is more used.  The shape of it is similar to the sickle, the blade does not have the perfect "moon horn" shape though.