Well it's fair to say you don't see this too often.
After completing my daily quest today, I claimed my free booster pack and proceeded to open it up.
To my surprise, as I turned over the cards, I kept seeing the Death Splinter
The first one I flipped was the Animate Corpse, then the Haunted Spirit. OK, that's not a bad Rare for a free pack.
Next came the Haunted Spider, then a Dark Enchantress - Nice. A rare and an Epic in the same pack. Finally, the 5th card I turned was the always useful Skeleton Assassin.
It was then that I realised all 5 cards were the same Death Splinter. It's a FLUSH!!! Now I don't claim to be a mathematician, but I would imagine the odds of this happening would be fairly long - does anyone want to work it out?
In the 500+ packs I've opened (alpha or beta), this is the first time I've seen something like this.
Anyway, see you on the Battlefield.....