That's very Golgari, but now you trade green for blue, and in doing so you open yourself up to mass card draw, filtering, counters, bounce, stealing, copying, and many more effects
In fact, many people assumed that it was on the Reserved List
It does not, for example, change when you may activate abilities that can be activated "only as a sorcery." You may choose different new targets for each of the copies
For the most part, ultra rare cards have the black star present on other rare cards
But putting this sort of effect in the command zone just makes the miser wheel combos way too consistent, and Ive been marginally happier ever since Leovold caught the banhammer