Its worth noting that, while the card doesnt go infinite with copy effects, it does at least scale in a pretty messed-up way with Clone effects, which each subsequent Swooping Pteranodon giving you an additional Threaten by virtue of being a flying Dino itself
The Cavalry is usually better in the same go-wide decks that involve its colors like Boros Aggro, Orzhov Tokens and you can use them both in Selesnya decks
As a deck can only contain cards within the chosen commander's color identity, the more colors within a commander, the more options you have when selecting cards for your deck
Until then, relax, and try not to escalate things too much
Vanquish the Horde Vanquish the Horde has that Blasphemous Act pedigree, being a wrath thats often cast for cheap
There're almost no wrong answers here, but there are tons of ways to make it your own, so play it your way and have a great time with it