Odds are: Flash Foil: 1 in 6 (opened up 8 packs today and didn't get one), Gold Flash Foil: 1 in 308, Awful Apps: 1 in 3 (got 3 out of 8pks), Lame Game Stickers: 1 in 3 (got 1), Motions: 1 in 6 (got 1), Magnets: 1 in 6 (got 2!), AND - drum roll please - Sketch Cards 1 in every 471 packs.
Canadians still have to take the math test to submit for a chance at an insert.