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
Tiana, Celebrating Princess ability stops your opponents from playing actions while your hand is empty, pairing well with cards such as Cinderella, Knight in Training and The Huntsman, Reluctant Enforcer who provide ways to draw and discard cards, refining your hand to find exactly what you need
This inexpensive instant can help to deal with some powerful cards like Wrenn and Seven, Ranger Class, Esikas Chariot and [tooltip]The Book of Exalted Deeds
The handful of smaller mechanics like meld, devotion, and hideaway arent very impactful to the draft set, but they are nice inclusions of Final Fantasy flavor