Primeval Blade

The primeval blade is Crono's ninth-level weapon. It has an attack power of 70. It can be traded for at the Ioka Village Hut for 3 Fangs and 3 Horns and/or charmed from Megasaur.

Etymology
While it seems strange that a double bladed sword would be used in Crono's arsenal, the weapon is based on the katana's predecessor, the tsurugi. Tsurugi were made long ago in the ancient periods of Japan, namely the Jomon and Asuka periods, by the ancestor tribes of today's Yamato ethnicity. The theme of the weapon also fits within the series; as the Primeval Blade is the first metal forged blade of Guardia's predecessors, it can be in essence, the series' "first" katana.