Dawn of Hope
As I started going through more options, though, I realized that "essentials" here could mean things like Dockside Extortionist, Purphoros, God of Forge
On his own, he is a blue and black Dragon that costs six mana and enters with three power and five toughness in addition to the Deathtouch ability, which lets him kill any creature he damages
If I had to pull out anything interesting to say, its a 5-mana spell that sometimes only charges 2 mana, which might matter for cards like Vial Smasher the Fierce or Rain of Riches
Still, Hakbal brings their own set of tricks, leaning into the somewhat undersupported explore niche
In decks like Lazav, the Multifarious, those cards in the graveyard are still very much an asset