Whether its Demonic Consultation, High Tide, or another key spell, Kess gives your deck a level of redundancy that makes going off far more consistent
For players, it adds cards that can fit into commander or draft decks
I think Talion, the Kindly Lord is fun, but I think its better as a commander in its own right to take advantage of its ability early
Getting multiple copies of this resolved is likely enough to win you the game or put you in a position to win
While unbanning something like Stoneforge Mystic or Umezawa's Jitte would create a bit more equity and provide another solid reprint for a future Masters set, none of the other cards on the Modern banned list would be nearly as hyped or as expensive as Jace, the Mind Sculptor)
Upon transforming, it becomes the 3/3 Howlpack Alpha