To get them from your Attraction deck to the battlefield, you'll need to open them, using cards like "Lifetime" Pass Holder
That card is Hare Apparent, a 2/2 rabbit that makes more bunny tokens for each Hare Apparent you have in play
He can spit out Dragon tokens when you need creatures instead of cards, and unless you really need Eternal Dragon on the battlefield in play, you can ignore his ultimate ability
The new Azusa card depicts the character in a new outfit, relaxing and enjoying herself in a flower garden
Most Lifegain decks are generally black, white, and/or green, most commonly Orzhov (black/white) or Selesnya (green/white), and Golgari (black/green)
Merchant Scroll is sort of like a blue Demonic Tutor