Ekans does not evolve with a stone. Ekans evolves by leveling it up. Once you level it up enough, it will evolve into an Arbok. It does not evolve any other way.
Ekans evolves at level 22.
ekans evolves into arbok at level 22
Arbok does not evolve into Seviper, it doesn't evolve after evolving out of Ekans. Hope I helped! :)
In episode 31 - Dig Those Diglett.
if you levek your Ekans up to level 22 it will evolve into a Arbok.
Ekans does not evolve with a stone. Ekans evolves by leveling it up. Once you level it up enough, it will evolve into an Arbok. It does not evolve any other way.
Ekans will evolve at level 20.
Ekans will evolve at level 20.
Ekans evolves at level 22.
Ekans evolves at level 22.
ekans evolves into arbok at level 22
ekans --lvl.22--> arbok
25
Get EKANS! to level 4
LV22
At level 2222