When people make a big list of balance suggestions without being one of the best and most experienced players in the game, it’s generally a sign that they think they know more than they do… but here, in my opinion at least (not that I’m one of the best/most experienced yet either), you’ve actually touched on a lot of the cards that are not pulling their weight in general use.
Running through your list:
Feral Kodama: Agree that 6/7 would be perfect (although a big part of the problem with this card right now is Sagami Huntmaster - if that gets the nerf it needs, 7/7 might be okay)
Forbidden Library: What you’re suggesting is actually a buff.
Shimmering Statue: 5 health would be good. 6 is a bit too much.
Radiance: Agree it needs more defensive capability; 11 attack is not the way to do that. 9/10 with Taunt, or 9/12 without Taunt, would be nice. Unless you’re suggesting an 11/11 with Taunt but no Dash?
Gaea’s Grace: This card is good enough already.
Egg of Wonders: Probably needs to be 4 mana to be playable in anything except all-out Ogre Dance decks. The buff in health that you suggest would be nice as well.
Krog: Great idea, this would be perfect
Devouring Plant: Agree; 6HP would be nice
Cannon Carrier: Some of the top-ranked red decks do use this guy; he does not need a stat buff - though allowing him to use his own Ranged like you suggest would be a nice quality-of-life improvement
Volcanic Colossus: Agree with both of your suggestions. I haven’t seen him in Constructed once since his rework.
Ignus: Probably needs more life and less power (e.g. 4/4 -> 4/6, 4 damage effect -> 3 damage effect); the problem right now is not that he’s weak but that he’s unreliable
Annoying Gnat: 1 desert doesn’t seem like the right buff since in his current form he is only good in Sacrifice decks anyhow. I’d rather see the malus be “can only gather 1 Faeria per turn” instead of “can’t gather Faeria”.
I personally feel like Kodama is more of the problem but I may well be wrong on that.
Really? 1 damage each turn for the extra faeria seems like a good deal to me. Especially with cards like healing song, Tiki Healer and Wild Avenger.
I get the same inclination, which is why 5 was my main suggestion. I just wasn’t sure whether it would be enough.
Suggestion is 11/11 and with Taunt instead of Slam.
I haven’t any one play it though. Do you think it’s just poorly positioned right now?
Dropping to 4 might be better.
Figured what the card needs is more immediate impact, and taunt also helps make use of it’s stats and ability.
Hmm. I should have a look at these decks then.
I reckon he could probably be 5/6 if he is dropped to three damage.
My thinking with this change is simply giving a little more life would make him more reliable- that could be the wrong approach though, I suppose.
I don’t think it’s really to limit it those kinds of decks, I just think making Gnat a bit better could help those decks to diversify.