The Wandering Emperor Attaching an exile effect to a planeswalker promises some amount of value since planeswalkers are often better than two-for-ones
Meldweb Curator I mention this because someone will probably note it as a neat option, but honestly, you should just play Archaeomancer and Mnemonic Wall
To protect his inventions, he set up his own private lab, complete with secret doors and traps for extra security
Halo Forager Due to its nature, Halo Forager reminds me a bit of Snapcaster Mage as they both let you cast instants and sorceries from graveyards, with the faerie being a bit better as itll let you use spells from anyone's graveyard
It hits a lot of the early interaction and removal spells, but it doesnt hit the haymakers like Teferi, Hero of Dominaria or Jace, the Mind Sculptor, and is often a poor lategame topdeck
You can pay 2 to exile it then only 3 mana to play it on a later turn