Each of these decks maintains the high print quality youd expect from a Wizards of the Coast product
This card's variable casting cost allows you to put Angels on the battlefield while holding up mana for counter magic you happen to have in hand, and a single card that can fill your entire board is always a welcome inclusion in a format like Commander
Brood Keeper may very well have adopted them given some of the close ties between humans and dragons in Magic, and her flavor text makes it clear how much she loves her little beasties
Some items have passive abilities that always work like Coconut Basket
For 1 black and 2 colorless, and an additional cost of exiling the Dreamthief, you get a typical black draw 1 discard 1 ability
All of these cards can be found in the new Alchemy: Innistrad packs, which you'll find in the MTG Arena Store alongside packs for Innistrad: Crimson Vow : These packs work just like normal store packs, but because Alchemy: Innistrad doesn't have any commons, those slots are filled with Innistrad: Crimson Vow commons