Question about completing the regional Pokédex

I want to complete the regional Pokédex and I need to get all the starters. As games i got White and Black 2; in the White save I chose snivy and i recently started B2 whit oshawatt. Is there a way to get Tepig? I don't know if some one had open a server where it can be traded or if it's there a more cheaty way to get it.