[TRADE] Help me evolve some Pokemon

[Smack Jelly]

Hey Everyone, I am working on a VGC team and I want to use Gengar but right now he is only a little haunter. I have EV trained him and leveled him up to Lv 50, he really wants to be a Gengar. Can someone please help me evolve him?

Also I have a Shiny Onix that I want to evolve

It should take like 2 minutes just trade with me and please give Haunter and Onix back to me after they evolve. I traded with someone before and they didn't give Gengar back to me after he evolved