Comfey has one ability, Flower Picking, that lets you see the top 2 cards of your deck, place one in your hand and send the other to the Lost Zone
It says the offer is aimed at metagamers who've found the MTG Arena decks online and "just want their cards quickly so they can start playing their deck." If you want to get the most out of MTG Arena, you'll want the free packs, XP, cosmetics, and goodies you can nab with all the MTG Arena codes.
Or rather, more than accomplishment, I should say that I feel relief
Between 0 and 12 cards Between 0 and 3 Legendary Duelists with a Character Skill For example, a Side Deck could be made up of 9 cards and 3 additional Legendary Duelists with a Character Skill or 1 additional Legendary Duelist with 3 different Character Skills Any changes can be made to the Deck between Duels of a Match, including the following: Adding Cards Subtracting Cards Changing Legendary Duelist Changing Character Skill The Deck must be legal for play (appropriate number of cards in the Main and Side Deck, complies with the Forbidden and Limited list available within the DUEL LINKS app)