How does this totem work exactly? I mean after you've selected it and selected your pet, then what?

This is a guess, but I assume that after you use it, it lets you upload one custom overlay for free. Overlays aren't tied directly to the pets. You upload them to your "bucket" or whatever they're calling that page now and can remove them or reassign them to other pets later on, so I don't really see a reason for it to ask you to select a pet.

I haven't and wouldn't use one though so I'm not 100% sure. You might want to file a ticket before you use it just in case.

It normally costs 500 csc (I think) to upload and use an image custom made for a pet. This totem waves that fee. If you use or have a desire to have artwork done for a pet to male use of instead of the standard subeta image I'd say go for it. Otherwise personally I would go for the slot, stats or a name change to make a good use cscwise of the totem

Thanks!