Fireyjon

Is there a specific place to go to try to request a specific trade? I’m trying to get Mega blastoise ex (need it for my collection) and I want to set up a trade but finding the way the app works I have to make the offer and hope the person has what I want and is willing to trade it. Long story short where would I go to find someone willing to trade a mega blastoise?

So I’m just posting to brag a little bit because I feel super bad ass about what just happened. So my party was in an underwater temple to an ancient forgotten god, and as part of this temple there was a very formidable foe, a mammoth Aboleth ( basically a beefed up Aboleth my DM home-brewed) we were a party of lvl 8 characters so it wasn’t impossible for us to win but it could also have really fucked us up. I ended the encounter by using banishment. Best victory in a long time.