This is the most redundant group by a long way and as such you can build almost entirely to "Reanimate" without dipping into other themes
The extreme difficulty of receiving the BGS 10 Pristine grade gives this card a significant boost in value
Playing the exiled cards will make you Treasure tokens, and if there are any left over by the end of the turn, you will still get mana by creating those Spawns
Exotic Orchard will help you get to the five colors you need more often than not, and is far less expensive than some lands on this list
Usually, in design, when the players keep doing something wrong, but do it consistently wrong, you want to seriously consider just making the mechanic do what everybody instinctively wants it to do
A cheap self-mill payoff that grows in real time is a cool build around