I don't know. Maybe my view is slightly biased, as I managed to get all the npc drops. It wasn't easy, but it wasn't impossible either.

Whilst I do agree it seems a bit odd that a 2-star card be as hard (or harder) to get than a 3-star card, outside of the random rule you are very unlikely to use the Yugiri card... the ONLY reason to get the card is the for the challenge of actually getting it, it's not like it's particularly good, or needed. The only people that want it are completionists, like myself, and if they are too readily available it takes away the fun of actually trying to get the full set. Just my opinion. I still have a few cards left to go, the only one of which being a challenge is the 1m MGP one. the others are plat pack drops, which seem to elude me, but they are just random drops rather than something I can really affect