Because it is the only common card with meld, Chittering Hosts power is quite a bit lower than its rarer counterparts
If you don't cast one or more of the copies immediately, you don't get to cast them at a later time
One out of three Draft boosters have a foil, but thats a foil of anything, including the basic land
Firdoch Core seems average at first glance, but it counts as a Dragon and that changes everything
And, obviously, you may only use the resources of only that player to pay the costs, not your own
If youve ever purchased a stack of cards from TCGplayer, you probably know how many envelopes you could end up getting, so expect the reverse of that when selling cards too