I went through a lot to make this really evoke the key aspects of green. I was looking for various things in creatures—mana abilities, trample, and boosts—and things kept coming back to elves. Even when I went for some larger creatures, there were still enough elf options in the middle to make going all-elf for 23 creatures a sound choice. The other cards bring all of that into play, plus life gaining and damage prevention. The costs are pretty low at an average 1.90 on a 23/5/7/3/2. While this means it doesn't have much to play after a half dozen turns or so, it can get so strong so quickly that it often won't matter because the game will be over.