Unlike the mobile games first event, which is still ongoing and offers a chance at pulling new cards by simply utilizing the Wonder Pick system, Pokmon TCG Pockets drop event is all about battling
5 cards rarity Rare or higher, 5 Uncommon cards, 4 Common cards, and 1 Land card
The Book is also tailor-made for lifegain/Food decks, as making a 3/3 flyer whenever you gain 3 life is a very good rate
The Dragon was also nerfed (multiple copies wont reduce costs to green), but the nerf should basically never come up in Limited
Raff Capashen, Ship's Mage, lets you play all your historic spells whenever youd like for a devious commander with lots of tricks up its sleeve
They are permanents when they're on the board, but aren't considered spells, and never go on the Stack