The ideal way to win is simple: Turn 1: Swamp, Play Dark Ritual, Cabal Ritual, Entomb: Getting Griselbrand, Cast Shallow Grave to drag Big Gris' butt out of the grave, Activate Griselbrand's ability twice to draw fourteen cards, Then Play any ritual effects you drew, aka Dark Ritual & Cabal Ritual, afterwards it's up to you how you get to ten spells cast in the phase, but you will finish out by playing Tendrils of Agony
Descend Upon the Sinful is criminally underplayed, and when you need to get rid of creatures, this thing does the job
For five mana, you get a Green White Enchantment that makes it so that whenever you tap a land for mana you get to add one mana of any kind that land can produce
While at the time of writing we do not know if Valley Questcaller is part of a cycle akin to the Villages, cards akin to it are all but assured to appear
At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.) Rebound (If you cast this spell from your hand, exile it as it resolves