There is a Saga called The Coming of Galactus that ends with you spawning a 16/16 token with flying, trample, and destroying land whenever it attacks
I feel like since Gisa and Geralf and The Scarab God have invaded the tribal scene, Grimgrin, Corpse-Born doesn't get quite as much love as he used to
I didnt talk about the adventure land before, but Im concerned that the adventure half could just be too low impact since it requires dead artifacts/enchantments to be worth it
The Cauldron will cost less because of the creatures in your graveyard, which you can then reanimate
The color identity rule in Commander means you cant run any cards that arent the same color as your Commander
While that line is probably more in the neat to think about category, Out of the Tombs has a more obvious synergy with cards like Laboratory Maniac and Thassas Oracle