These are the sets that are legal in the Standard format:
Polyraptor
Revel in Riches
Tendershoot Dryad
Rampaging Ferocidon
The Immortal Sun
Primal Amulet|Primal Wellspring
Trapjaw Tyrant
Nezahal, Primal Tide
Huatli, Dinosaur Knight
Carnage Tyrant
Huatli, Radiant Champion
Pitiless Plunderer
Storm the Vault|Vault of Catlacan
Journey to Eternity|Atzal, Cave of Eternity
Silverclad Ferocidons
Herald of Secret Streams
Gishath, Sun's Avatar
Huatli, Warrior Poet
Settle the Wreckage
Elenda, the Dusk Rose