In the third spread the reader creates a Hebrew word from three cards drawn at random, which can provide insight into the readers question
Temporarily copying enchantments, then stacking lore counters
A quick search of Scryfall reveals over 850 instances of the text "at the beginning of your upkeep," so there's a plethora of options when producing a Commander deck based around upkeep triggers
As such, if you have Castle Locthwain in your collection, you should play it, but if you don't, I'd make this the lowest-priority card in the deck to spend your wildcards on (although it is worth adding to your collection if you are interested in Explorer or Historic because a lot of decks play it)
Six Six is a powerful mill and recursion tool for graveyard decks, but you dont even need to care about the graveyard to run this since its a self-fueling engine