So much to unpack here.
To start with, I'll reiterate that this is a nostalgic set. Nostalgia is different for everybody, but for some reason, one thing that is nostalgic for me in Magic is walls. I remember cards like Wall of Roots and Wall of Brambles. With these walls in mind, in Ruin of Seffala, I gave green a Wall sub-theme, specifically in the form of wall tokens.
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One of the problems I hear about walls is that they only stop one thing while the rest of the opponent's creatures go around. I decided to address this problem two ways: first, I made them tokens, which means they can be repeatably made, rather just being one card in the deck; and second, I gave them Toughlink, so an opponent wishing to slam a creature into a wall (or even chump check) will have to calculate how much you stand to gain in life by that exchange. With one wall token out, and nothing else, suddenly the opponent needs not just two creatures out, but two creatures with power 4 or greater to do any damage at all.
I also have a Defender-matters payoff in green, as well as life gain payoffs elsewhere. As well, the green/white archetype of Ruin of Seffala is primarily a token strategy, where you'd make green walls on the ground and white flyers to hit from the skies. The green tokens also work great for a green/black tron player who wants to protect their enchanted creature (we'll see black's tron enchantments coming up soon).
With all of these cards, multiple Moss Wall tokens can be made. Lichen Grower is like Sly Charlatan, and Moss Song is like Call the Volantile (both in white, shown in an earlier post). Twig Witch offers a repeatable option for those who want to go really wide on the walls.