It has the life gain of some of the best Beasts, and sheer size that can't be matched (provided you have the mana)
In green, that was Giant Growth, which I assume most of you are aware of
Mime TEU 66, have both rotated out the Standard format, but their interaction still exists in the Expanded format.) If youre unsure about whether a card youre interested in using from an older set is legal to use, PokGym has a helpful list that details which cards from previous sets are currently legal to use in the Standard format
The +1 is embarrassingly weak protection against three separate opponents, and the -9 isnt even a guaranteed mill victory like it usually would be in a 1v1 match
The next spoiler from over the weekend is Summary Dismissal, which was posted to the Japanese trading card game site Duel Portal
Also, at first glance, Chevill looks like a liability against control decks, but in practice it's a huge plus to be able to recoup some of the inherent card disadvantage that comes with casting removal spells on planeswalkers