The True Scriptures both takes a lot of resources away from your opponent and gives you a big boost to your board state if it reaches the third lore counter
Its a powerful planeswalker that allows you to give retrace to cards that dont have it, allowing for wild combos
To that end, Ravensburger has reprinted many classic cards from the games first four sets to keep decks viable, and essentially present a core environment
If your dino deck is packed with dinos (which it probably ought to be if it's a dino deck), consider including Vaultborn Tyrant, a mega-resilient dino that'll surely be drawing you tons of cards
Out of the three of them, I think Jace, Wielder of Mysteries is the perfect mix of usefulness and power: he can be played early in the game for advantage, but he also encourages combat as he can be attacked directly