Why would anyone play this in a faster deck along with these 2 cards? She is not a spell, does not have agressive stats, needs a lot of setup to be good, and is better the more mana AND cards you have to combo with (very rarely the case.)
I think even Loot Hoarder would be better in the decks this is supposed to fit in unless we see some very strong support cards!
It's worth noting that this card has the same stats as Brann Bronzebeard, a card that was sometimes played on curve instead of being used as a combo piece. When used in this way, you forced your opponent to deal with a minion they might have otherwise ignored. Saving their limited removal on a larger threat might not be an option if come next turn you're drawing multiple cards because of their decision to let Luna live.
That being said, it's a lot less flexible than Brann, so it probably won't fit into every deck. Still, I'm optimistic about this card.
Considering that any effect that adds cards to your hand adds on the right side, this card has synergy with any such effects. If any cheap cards that can do that are revealed for this expansion, this card might have potential.