This card is great. 2 mana for this effect alone is too much for vintage, it'd be good for 1 mana. But being free as the first spell obviously changes things, so...
As a survival player I can see myself wanting some copies of it, specially in builds with maindeck force of vigor. If it's not in your first hand you will either have the mana to play it or bazaar to 'cycle' it. We have several kinds of cards between lands and creatures, and we can have at least like 4 different approaches with our first hands:
-fast bazaar with VV+rootwalue and hollow
-survival with or without manarock/dork
-playing out hatebears
-'ramping' into 4-mana 4/3 haste (yeah, it happens and depending on the situation it's not bad).
-blind bazaar hands (only lands and irrelevant spells, trying to get lucky)
In all of those situations there are good, mediocre and bad cards for the situation. Cards that are great in some of those are bad in others. But this free turn 1 spell can grab cards that go into any of those situations. If you have it turn 1 it may be better than vengevine or even bazaar.
It's a mix of redundancy and filtering.
I don't think I'd run 4, maybe not now (having 2-4 of these in your openning hand would be bad). I can easily see myself playing 2 copies of this.
I don't know about other decks, I get the world isn't about survival (not of the fittest at least), but I'm just showing a case where this card WILL be good.