Herald of the Pantheon You need to play an enchantress deck for Herald of the Pantheon to work, but theres a heavy overlap between enchantments and lifegain thanks to cards like Sigarda's Splendor and Trudge Garden, plus this green creature offers great ramp via cost reduction
Shes the best Elf commander in MTG for players who want combo potential wrapped in a politically friendly package
Cost The first broad metric to evaluate is cost
Short version: its a ready-to-play 100-card Commander deck, mono-black, built around artifacts and recursion
Fathomless descent is similar to descend X, but the ability will be dependant on the number of permanent cards currently in your graveyard when the ability is activated (usually as a comes-into-play effect)
From Neon Dynasty draft boosters you can draft powerful sagas even at common, and decks that care about enchantments, artifacts, or both work great here