Elspeths Nightmare Elspeth's Nightmare is good early game removal since it can also help you avoid a threat in a players hand, and then exile it the following turn
If the copied enchantment is copying something else, then the token enters the battlefield as whatever that enchantment copied
Zevlor, Elturel Exile lets you bounce a targeted effect from once opponent to all of them, which lets you Mindslaver or Worst Fears everyone
(At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) At the beginning of each player's upkeep, that player sacrifices a green or white permanent of their choice
Cracking the Case Whenever you deal combat damage to a player, you get to make a suggestion with a suspect, murder weapon, and crime scene
If its open enough, you could have a real monster of a deck on your hands