The only way to get the tokens is during a monster hunt or with the beast bane display (gem purchase). So Traders Wagon is useless unless it's monster season. Many players, me included, would much rather have monster seasons than the LB event going on now (can't believe I said that, but it's true!). It's been probably 6 months since the last one, so come on S8 players have goals related to it so bring it on!!!
Your other question:
There are 5 separate goals for the Trolls.
Here's a link to Troll goals in the Story Guide of the The Hub. They are in order so scroll through all the parts to find where you are in those goals.
https://forums.storm8.com/showthread...=1#post1364393