Modal means it's decent where it may not have been otherwise
If you have a host of green creatures, however, youre bound to draw a whole hands worth of cards, maybe even more
Though in truth given that there isn't exactly a dearth of strong card draw in EDH it's doubtful you'll see much of this though it's also snow that doesn't cost snow, and racking up snow permanents may help in some scenarios
Mostly I see it as a functionary in a +1/+1 counters matters deck, like in Ghave, Guru of Spores, since we get bonuses for moving the counters back and forth
The card is placed horizontally on top of the current in-play card unlike the previous evolutions in the chain which are still completely covered
While precons are also a good way to get new players into the game, they can still be quite intimidating and demand some level of awareness and familiarity with the game