Actually nevermind since if this were to become a thing I definitely wouldn't want to see everyone with a bunch of timed BM exocores. Nice suggestion ( ͡ᵔ ͜ʖ ͡ᵔ )
This 1000 times. You know when two guys have succubus on Arena fort? Now imagine if all the scrublords out there had succubus, essentially forever.
I love the idea and I think it would motivate people to do more Adventure mode. However, I have two small suggestions that you may consider: Perhaps you may want to increase the price from 1.5k to 2k. This would eliminate the chances of spamming the boxes in order to obtain the BM exocores too regularly (I think it's a good idea that you added them; they shouldn't be removed completely since they are relevant.) Alternatively, I'd suggest changing the time from 25 days to a chance of obtaining them for either 3 or 7 days each. For example, Succubus (3 days) and Succubus (7 days) have a chance to be obtained in the box. Other than that, this idea is very creative and I can't help but support it. I hope it gets implemented soon.
