We've also used double-faced cards in this release to represent a few other game mechanics, including some sidequests and the rewards for completing them
-2/-2 is already a reasonable removal spell for the early game, but you can easily sacrifice a throwaway artifact/creature to kill just about anything in the format
While players failed to break Orim's Chant on its own terms (with Recall and Howling Mines), they did find it useful in combo decks such as Aluren and Mirari's Wake
The average mana value of spells in your deck should be around 2 or 3, as that ensures you can cast spells throughout the game
It's very fitting for Morph, who can alter his shape into basically anything
Her I Trust You ability lets a player look at the top two cards of a deck and take one into their hand every time she quests, generating plenty of card draw and making it easier to get a specific target