As for promo cards, it's hard to find a more sought-after Charizard promo than Charizard #14/P
Its a decently enough expensive spell with a high enough effect that wasting a little bit of mana isnt the end of the world
Curtain's Call is a good choice : it costs six mana to destroy two creatures at instant speed, which puts it on par with murder, but that cost is reduced for each opponent, making it much more efficient in most games
Thanks to this, all the historic support works very well together, and even though all the Doctors have different designs and playstyles, they all mesh together for a solid Bant precon that's great out of the box
Rather than costing $24420.48 (using todays Amazon prices), Hidetsugu, Devouring Chaos (Neon Red) only sold for $900.86
Its a good example of how you can build a deck around a powerful effect while also showing off unique artwork