Oh, and, it has stock. you can also buy shards for their price in the trainer, 7. an SoG, SoD, or SoR would cost 1507. Oh, and, don't put nymphs, keep them "Ultra Rare". It would be good because newbies who need rares might get lucky, get in, and get an eternity, etc.
It would also help people who wish to try a new type of deck, like animated adrenaline jade staff. But if you can't farm them off T50, because you never get jade staffs, and instead eternities, or pulvies, then it would be considerably harder.
@harry: To do it in one place?