A fog effect sounds like a good idea. It helps deal with all the extra p/t boosting you've been doing for your opponent.

I think it'd be worth taking a lesson from Moonmist and making this work like Fog if there are no Fungus around at all, and conditionally better if there are. Sometimes in my Werewolf deck I don't have any Werewolves left alive and just need a Fog; it can serve that purpose in a pinch. I think this should do similar.

Hmm... that's reasonable. I kind of like the way it is written now, but I can see many players thinking the card is 'bad' because it doesn't straight up fog, plus something else. Plus, it will get simpler in the exchange anyway.

Double hmm... Now that I'm thinking about it, I'm not sure how you do it. If the card said something similar to "Prevent all combat damage that would be dealt this turn by creatures that are not Fungus you control. (sic)" then this card wouldn't feed into the Fungus mechanic at all. It would just be a tribal fog... but it wouldn't care if your opponent had any Fungus creatures, or +1/+1 counters on them.

How about this instead: "Prevent all combat damage that Fungus would do this turn. You gain life equal to the damage prevented this way." That could be one hell of a trick to play... especially since your opponent's fungus is already +1/+1 bigger... ­

I don't really like that. That works against having your own Fungus; it's best in a deck with spells that make your opponents' stuff Fungus but otherwise as many non-Fungus creatures as possible! And it still does nothing at all if there are no Fungus on the board. I prefer the current wording to that version.

Now you could have something like "Prevent all combat damage that would be dealt this turn. Whenever damage by a Fungus is prevented this way, you gain that much life." That at least works as Fog if all your Fungus-makers are dead, while still being better-than-Fog in a Fungus deck.

That makes sense. It doesn't sound like the final solution, but I'm going to change it to that for now.

Also added a because mass reverse damage can't be that cheap...

I'd feel bad about adding another fungus non-creature card, but, well, this is the only one, technically. Two others add +1/+1 counters, but they don't call out fungus specifically, so, yeah.

I do feel bad about adding 4 of my submissions in this pass, but there wasn't anything else I could do. These 4 were the only non-creature submissions in mono-green.