A quick look at EDHrec shows us that mono-white and mono-black have a high number of life gain decks, but mono-green doesnt crack 1000
Aside from making an artifact in general, in the right deck this is a psuedo ramp piece as well as a utility card, so I think the versatility makes up for the two not-as-powerful combined abilities
Zimone can't target lands or your opponents' permanents, but was that the reason you were playing Vorel
Aeon Chronicler Allosaurus Rider Baldin, Century Herdmaster Barrowgoyf Body of Knowledge Detritivore Duggan, Private Detective Kagemaro, First to Suffer Kiyomaro, First to Stand Maro Masumaro, First to Live Minas Tirith Garrison Ms
Other threats Ragavan, Nimble Pilferer Ragavan, Nimble Pilferer is among the most powerful one drops in all of Magic
Bluff your opponent by swinging in with a 2/2 and make out youre gearing up for a devastating flip, even when you know its a noncreature card you cant do anything else with