The only thing that's really saving this is the 2nd effect, it's useful, but too dangerous in my opinion
The card would have a curse score separate from its power, so a 1/1 creature could potentially have a curse 3 ability, putting three -1/-1 counters on blockers
While it will still take you a while to complete, this secret mission will be progressed alongside the first two Museum secret missions for this expansion pack thanks to a card overlap
Be sure to choose ones with slots big enough for sleeved cards - it'll save you a lot of hassle
I never intended to let the Commander 2016 entry be put off for as long as it has, but I would be lying if I didnt admit that the set had unique challenges built into it, making it a feat to discuss with the depth I wanted to
Duel Monsters GX Spirit in Japan