From the art and gameplay, they are both flavor wins, and fun as hell to play
Merlin, Rabbit is the only card that allows you to draw, and while Tiana, Celebrating Princess does provide some benefit to an empty hand, the problem is that every card you draw of the top will cost less than four ink and be fairly low impact
Not every creature can be re-cast from the graveyard, so permanents that generate tokens are vital for this strategy
Dont be surprised to see players trying it out come the Holiday season
As for the second scrap, it appears to be a black common from the set that has an unless its controller-type ability
Reducing an opposing character's Strength is an ability we have seen on other cards already