As you look forward into the future with this deck, you can set up for swingy attacks with Commander bombs like Overwhelming Stampede or to keep your creatures safe from harm with one of the best protection spells in the game, Heroic Intervention
Stormbreath Dragon is excellent, although my guess is that people would not like it so much if not for Thundermaw Hellkite shaping what kinds of cards people think are supposed to be good
For cute creature lovers, we have gaelicat, and tonberry
At the beginning of your combat, you toss a free +1/+1 counter on your stuff then one mana level two to give your any countered stuff (not just critters) ward to protect a bit
Hopefully, these decks will help you tighten up your Ruby/Emerald starter deck and start thinking about new ways to construct your own versions too
When you do, return target creature card with power 3 or less from your graveyard to the battlefield tapped.