Ajani's -8 ability floods the board with 2/2 Cat tokens equal to the players' health
Necropotence is now free to play in Commander and other Eternal formats
Opponents will know what or who you are targeting before you flip, and can respond with spells and abilities at that point
It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, and so on
Drawing A Whole New World will quickly rack up your lore count, especially if you've got more than one Jafar, Striking Illusionist in play and exerted when you either play or Sing the song
Ultimately, the bailiff at the end of the maze judged Jace to be best suited to inherit the power of the Guildpact, turning him into Jace, the Living Guildpact (hence the flavor of Maze's End winning the game when you've assembled 10 gates)