In a vacuum, its going to be pretty expensive to clear the board of anything significant, and youre very unlikely to be able to touch the big Eldrazi in the set
There are some more minor options in Red and Black utilizing more of a ritual-style ramp effect, but outright ramps is a bit more of a rarity, especially on ETB creatures
Spells like Heroic Intervention, Boros Charm, and Teferi's Protection will spare the Dinosaur horde a miserable fate at the hands of board wipes, though the deck must remain cautious of counterspells that may interfere
Most of the time, Polukranos is a big creature that dominates the battlefield and can take on some small creatures
I do not think it is great, but I am interested to test it and see how it plays
If you attack during your turn, he puts a +1/+1 counter on a target creature and creates a Food token