An uncommon submission for green. Along similar lines to Invigorating Boon or Oath of the Ancient Wood, but in the simplest form.

Much better than Ley Line and Cycle of Life, but I don't think that's a problem...

Seems like a good design. I find it hard to judge the strength of cards like this that don't impact the board, but give you a significant creature advantage.

Took the liberty of adding "you control" to the text, since that's what I assume you intended, Alex. I suppose this could say 'may' instead, if you want to use this for multiplayer, but don't want to shoot yourself in the foot.

Mmm. I think I prefer "you may" to "you control", because one of the themes of green was at least meant to be that you can turn your opponents' creatures into Fungi and then several of your Fungi benefit from there being more Fungi on the battlefield.

Makes sense. Done.

Should it be "bud"? I'm not sure.

As in, "At the beginning of your upkeep, bud"? That'd mean all the normal Fungi need to say "When ~ ETBs, bud", which doesn't look so bad with the abbreviations but is worse when it looks like "When Generic Fungus enters the battlefield, bud. (To bud, put a +1/+1 counter on target creature.)" Although... hmm...

> When Generic Fungus enters the battlefield, bud. (To bud, put a +1/+1 counter on target creature.)

> Bud (When this creature enters the battlefield, put a +1/+1 counter on target creature.)

Okay, they're about the same length including reminder text. I think players will internalise "ETB bud" very quickly, so I guess there's not much to choose between them.

If 90% of the uses are going to be ETB, though, I think the keyword should just include ETB. See how Battlegrace Angel didn't say "Exalted - +1/+1, Exalted - gains lifelink".

Alternatively, we could just change the functionality of this card to match the mechanic, instead of the other way around. May I suggest:

Bud
Creatures cards and Forests cards you own gain Bud.

Hmm... I'm not sure if that's how you'd word that...

That's... a lot more fiddly wording to achieve essentially the same effect...

(Okay, essentially the same effect in Limited situations. Johnny can certainly have a ton of fun with "all your creatures put a +1/+1 counter somewhere".)

Yeah, I wish there was an easier way for an effect to be "ETB action on creatures, action on spells and activated or triggered abilities". You could make the comp rules say "bud" could be either "When ~ ETB, you may put a +1/+1 counter on target creature" or "Put a +1/+1 counter on target creature". I think that would work unambiguously, but would be a bad idea.

OK, with no easy way of wording this with "bud", I think we should leave it as is. We can change it later if bud changes for some other reason. This seems like a nice card which goes well with the set, but could be reprinted elsewhere.

We could add "creatures you control with +1/+1 counters on are fungus in addition to the other types" here for flavour reasons, although I don't like doing that too often.

I don't have a problem with leaving this card alone, but I think it's unfortunate that 'bud' has a hard time with spells like this. For example, we could also print a card like:

­
Sorcery
Creatures you control gain bud until end of turn.

Which, in theory, would mean that you get a number of +1/+1 counters equal to the number of creatures you cast this turn. But I'm not really sure how that timing works. I don't think works at all.

I've been thinking of changing Bud to say "As this creature enters the battlefield" as opposed to "When" like Devour does. It's very sad to see a 2/2 with bud get Shocked in response to the ability. And it would let us print a 0/0 with bud, if we wanted to do that.

None of that solves the timing with bud as a keyword, though, on etb creatures. Ah well. Focus on cards that work, as opposed to ones that don't, I suppose.