Once your leaders set, focus on the tribal essentials, and dont forget that a solid mana base featuring effective Dual Lands is the backbone of any top-tier multicolored tribal list, if thats what you want to go for
Now, with Wizards of the Coast (WotC) returning to the plane with The Lost Caverns of Ixalan , not only do we have more cool Dinosaur cards, but theres an entire Magic: The Gathering Universes Beyond booster insert set of cards you can open in Set and Collector Boosters that feature characters and moments from the Jurassic Park franchise
Its flexible counters let it adapt to almost any situation, so it can act as removal, token generation, or a finisher depending on what the game demands
You shuffle them up and randomly pick a suspect, a murder weapon, and a scene of the crime face-down and slide them into the Case File envelope
Signets, Fellwar Stone, and Journeyers kite are all solid options