For your enjoyment/research, here is this weeks Scryfall search
Reiki, the History of Kamigawa draws you cards, Garruk, Caller of Beasts helps you find creatures, Captain Sisay tutors for legends, Chief Jim Hopper creates Clue tokens to help you draw cards, and Old Gnawbone gives you Treasure tokens
You can simply use cards like Infectious Inquiry and Vraska's Fall to spread poison around and sit behind your massive creatures while proliferate cards like Vraska, Betrayal's Sting and Evolution Sage slowly kill your opponents
There are a lot of must-haves that take your deck's power level to the next level regardless of what creature type your deck is built around
"Or less." If you control just it, then you cannot drop a lesser drop, just a three-drop
Its still something desired by many players, and played a lot