Another 2+2=5 card :)

Creature spells aren't modal, so entwine doesn't do anything for them.

Who would pay or for a 1/1 flyer anyway?

Ah, sorry; this is another riff on http://multiverse.heroku.com/cards/8869 . I agree it's probably never a printable card, whether the templating and costing is fixed or not.

On the other hand, isn't it strictly better than things like Nightshade Stinger? That's maybe not very useful, but it's more than green normally gets flying-wise, isn't it? :)

Oof. Memory issues. If you had 15 versions of these cards in a draft, and multiple copies showed up in multiple games, there would be no end to the headaches.

I don't think the power level is that bad, though. One just have to look at it differently. This is a 1/1 for with Reach, or, most likely, can only be blocked by flyers. If you have nothing better to do on round 2, or late in the game, though, you can just get a 1/1 flyer. 1/1 evasion for 1 is probably a 7-9 pick, so it can't be that bad.

Yeah, I wanted to do an instant like Alex's but then the entwine was really pointless, and this seemed like the best compromise. Probably the whole point is that green wouldn't really get this choice of ability as that basically is as good as flying (since 3/4 of the time you want to attack or block). I don't think the memory would be that bad: if you had several, you would probably remember you had all of one or some of each, which is normally enough, but I agree they wouldn't print it for this reason.

Perhaps this could be an instant: "Choose one -- put a +1/+1 counter on target creature and it gains reach; or put a +1/+1 counter on target creature and it can't be blocked except by creatures with flying. Entwine ."

Hm. That's a bit nicer, but still does require remembering which mode was chosen. (I wasn't going to bother improving this, but there's enough suggestions now I want to try :))

Well, the point is that the +1/+1 counters can be used as a mnemonic. To be properly unambiguous I guess it should have the Anavolver treatment: get one counter for one ability and two for the other, so three for both. But that's fiddly to make each individual modal half reasonable for the mana... and also the combined effect is now rather less clearly white/blue.

Ah, sorry. Yes, I assumed you were trying to solve the "remember which mode" problem -- if you're trying to solve "let it be an instant so entwine works as normal" and not about the memory issues I agree it's definitely a good way.

FWIW, I nearly had "Entwine {any colour apart from green}" :)