Well, maybe. Because it turns out that R&D doesn't always use stickers for its playtests. When making constructed decks, some people like to take ... shortcuts. For example, check out these three Magic 2011 playtest cards.
The first question this raises, of course, is "Where in the color pie is '3'?" Also, "Why does '3' cost both and ?"
Okay, the question it actually raises is "What are each of those cards?" Because it turns out that the "3" in question means something else each time.
Well, that makes sense to abbreviate as "3". Sure.
Also logical. What else would a 3 that cost mean?
And that would be our . Interestingly, if that card had had a 1/1 added to it, it could have stood in for Augury Owl.
So let this be a warning to you! Even if you do become invisible and sneak into R&D to watch playtests, you might still not know what's going on.