Apart from lands, ramp, draw, and removal, I would make the other categories "enablers" for cards like Awakening Zone and "payoffs" for cards like Dictate of Erebos You might notice you're not running too many ways to generate enough tokens and a tad too many sac outlets or payoffs that aren't triggering often enough
(11/8/2024) "Flashback [cost]" means "You may cast this card from your graveyard by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack." (11/8/2024) You must still follow any timing restrictions and permissions, including those based on the card's type
Very few cards in any given set are so unique that you cannot understand their power in a vacuum
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They are Vampires, after all
Harder is getting the card draw for yourself, but not out of reach