Playing one big dragon for free post-combat is cool, but if you can keep your hand full, which you should be able to do with Garruk's Uprising, Rishkar's Expertise, and Greater Good, you can dump lots of medium spells rather than one big one
Though this particular variant will set you back $137 on average, the same card has been available with different art, but the same game mechanics as far back as Romance Dawn, the first One Piece Card Game set
Champion of Lambholt is another common sight for green decks utilising +1/+1 counters
We also have an unofficial fighting payoff with Vigor, which does the same thing but better
If you're doing well, your opponents will all probably have less life than you, in which case you get a bunch of tokens every turn