As for individually powerful lands, cards like Otawara, Soaring City, Field of the Dead, and Strip Mine are just a few examples of lands worth tutoring for
It has intriguing overlap with Blood Artist effects to build a lifegain strategy that hinges on sacrifice and token effects
Very flavorful for the plane that it depicts as well, especially since it directly synergizes with the transformed side, with relative easy access at four defense counters
Its also worth noting that Misthollow Griffin has a mana value of four, which makes Helga a reasonable option for a Bant deck focused around Food Chain
Whatever path you prefer with your graveyard superstars, you should try and sprinkle in a few medium-cost options and self-discarding ones as well just to reduce the inherent variance of what is essentially an A+B combo, albeit a very nonspecific one