A great limited card will single-handedly win you games
Whenever Raffine attacks, an attacking creature connives X equal to how many attacking creatures there are
She is however everything I don't like in a creature, she is mana intensive to get most value from, she is gold making her narrow, she is a legend making her vulnerable, she offers no value at all when deal with on sight and doesn't really have any particular synergy with anything
Glistener Elf is basic (and not particularly good outside of 60-card formats), but sometimes thats all you need to have an impact
This card may be my personal favorite, but its current value estimates make it likely that I won't be getting it unless I'm lucky enough to pull it from a pack
Oh, and that you have enough cards in your hand to ensure a significant hand size when the ability triggers