You dont have to keep track of exactly which card came from what pack, but I recommend recreating packs with the appropriate ratio of commons, uncommons, and rares/mythics
Then each of the chosen creatures are sacrificed simultaneously
Should you give Cloud Double Strike too, then you could be drawing and cheating out four cards at once, which is obscene
Because Elsa is a popular character and this was featured in the first booster set released to the public, this card is a valuable addition to your collection
The other card we were able to reveal earlier this month (that emotionally wrecked me) is definitely the outlier
$149.99 Save $26.54 There are always a ton of Magic: The Gathering expansions floating around at any given moment, and more on the way