Team Spirit isn't particularly fun, just a bunch of animals gathered together, but the flavour text lampshades how there isn't a chicken in this chicken-themed set, and you have chicken footprints on the background of the card text
For a balanced start, compare platforms, test free demos when available, and learn the lobby layout so navigation feels intuitive from the first session
Adding counters to your creatures on combat damage will keep your army large and in-charge
There are enough recursion effects with Monster Manual, Tlincalli Hunter, Crystal Dragon, and Eternal Witness to ensure that you can get them back in the very likely event that you mill these
That said, the most popular three-drop regardless of the build is BONECRUSHER GIANT
If you do this early in the game, that two mana is precious indeed