the only way to get it is to level tynamo up to level 39
Eelektrik does
The only new one to use thunder stone is Eelektrik to Eelektross. Then you have your Pikachu/Raichu and Eevee/Jolteon.
Eelektrik is an Electric type pokemon.
You can't find Eelektrik. You have to evolve a tynamo, which can be found in Chargestone Cave (it only has a 2-8% appearance rate)
Tynamo evolves at level 39 into Eelektrik.
Tynamo evolves into Eelektrik at Level 39.
You can evolve Eelektrik by using a thunderstone.
Eelektrik is #603 in the national pokedex, and it is an Electric type Pokemon.
Unfortunately Eelektrik can't be caught but his previous form, Tynamo, can be found in Chargestone Cave. He is extremely hard to find because he has a 2% encounter rate
Tynamo evolves into Eelektrik at lv. 39, give it a thunderstone and it evolves into Eelektross.
Eelektrik - Eelektross
Tynamo evolves into Eelektrik starting at level 39. Eelektrik evolves into Eelektross by using a Thunderstone.