It is speculated that you can spot which booster pack has a rare card based on the crease on the upper right corner of the pack, but it is also likely that the cards you pull are fixed since you could skip the pack opening sequence
That being said, the artifact removal may still be good enough for this to make the cut
One new leader card is also added
If they only have a few cards in hand, the choices of what to keep or discard are going to be much more difficult
All of History, All at Once Coward // Killer Rotating Fireplace The Girl in the Fireplace The Parting of the Ways The Tenth Doctor The Wedding of River Song Time Beetle Wibbly-wobbly, Timey-wimey There's also one Planechase card, Amy's Home: Best Time Travel Cards Time travel is a support mechanic (it's pretty useless without other cards that care about time counters), and certainly not the most powerful out there
You can only use each effect of "Beetrooper Formation" once per turn