Sapphire cards prioritize adding cards to your Inkwell so you can play more powerful cards faster
Return to Dust is another way to answer enchantments / artifacts
That matters for personal orders a single custom card for yourself, a friend, or a kid on your team doesn't require committing to a ten-card order
At the beginning of the next combat, return those cards to the battlefield under their owner's control and those creatures gain haste until end of turn
(I am, btw, going to take the physical ring from that game to use as my tempted by the Ring marker)
Mistbind Clique, the other 50 and one of the most powerful faeries, does require more support to be playable and as such is not a viable A cube card and resides in the dusty B cube with the other non stand alone faeries