Board Game Arena

Hello, I read carefully the rules of Volfyirion Guilds but I still have an interrogation: what is the diplomat doing and why should I buy this card?
I've the impression that it's useless... like a diplomat I guess
If I understand well...
acquisition: put this card at the top of my deck
effect: cannot be removed

If someone could explain to me how to use this card...
And happy New Year

You put it in top of your opponents deck, so what you're doing is giving him a useless cards that he'll be having problems getting rid of. It's especially annoying when coming in multiples, I had some games where I basically lost because of holding 2 diplomats that were basically cutting down my play options.

If it's a strong strategy or not I do not feel confident enough, but it definitely does something