Besides creatures that make more creatures, ideal reanimation targets are creatures that have a big impact the moment they hit the battlefield, so that even an opponent holding Swords to Plowshares with available will have a hard time recovering from your unfairness
The value depends on age, rarity, condition, demand, format legality, collectability, and reprint history
In a fun turn of events, it seems like Grixis upkeeps is a lot more of an enchantment deck than I expected, so here are some all-stars that work great in both Obeka and The Ninth Doctor
Placing in the top 64 at one of these events will get you a max rarity version of the Straw Hat doctor, Tony Tony Chopper
In a perfect world, I would toss a few fetchlands in there and play a godly Esper Control deck, but it isnt an option in Historic