I think the Thorn Grimoire Card is glitched! I got the Thorn after completing the year 3 quest but did not receive the grimoire card. I did not have Thorn in year 1 and was looking forward to unlocking its card in year 3 but it still has not popped. I have tried logging in and out, dismantling it and obtaining a new one from the kiosk and even maxing it out, but nothing has worked.