Strong/Staples:

None.

Interest:

Dionus, Elvish Archdruid (U): Obviously you need elves to make this worthwhile, but even just having a mana dork or two (or any Elf that has an activated ability - e.g., Imperious Perfect, which it goes bananas with) makes this a must-answer threat. It also is functionally 4/4 vigilance that grows.

Sutina, Speaker of the Tajuru (U): This is the best Civic Wayfinder / Farhaven Elf we’ve ever gotten and it’s also a landfall enabler. Pretty easy include even if might be just behind Llanowar Visionary.

Similar:

Braulios of Pheres Band (U): This templating is actually worse in Green because you so often use non-lands to ramp, but it’s still a threat that will grow over time and has decent stats (though it lacks trample). The attack trigger is very strong, but I do worry that this lacks an ETB and is thus vulnerable to removal. We already have Gaea’s Courser and Wickerfolk Thresher, which do similar things, but this is probably better than both.

Hungry Megasloth (U): Much better in most cases than Longshot Squad. I think if you’re trying to support UG flash, this might be a decent player.

Unique/Synergy:

Elvish Regrower (U): The body is more relevant than Eternal Witness, but I think it’s probably more comparable to Evolution Witness, which I think it has less synergy than. But on its own, it does seem like a stronger stand-alone I do think we just got a better overall card in Under the Skin.

Needletooth Pack (U): I like this a lot more than Cackling Prowler partly because it can share its counters around (which somewhat makes up for its lack of keywords). I do think this needs to go in an aggro deck, though, as otherwise it’s just a big dumb idiot and we just got the mother of all those.

Quakestrider Ceratops (U): We previously have had a 5-mana 6/6, a 6-mana 7/7, and a 7-mana 8/8. Well… Now we have this. And it’s probably not good enough. With that said, this is a two-hit kill and it can be reanimated and it’s got some cool factor.

No Interest:

Ambush Wolf (C): It’s an improvement over Pouncing Cheetah, but we already had up dog, I mean Bounding Wolf and I think I’d rather have Wolfir Avenger over all of those. The graveyard hate is a nice edge bonus but doesn’t move the needle a ton.
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Apothecary Stomper (C): Cleanup Crew gets you nearly both options and has additional upside.

Beast-Kin Ranger (C): An often 4/3 trample for 3-mana is a decent card in a Green aggro deck, but a lot of cubes don’t explicitly support such decks. And for the statline, you can probably get similar benefits from Hound Tamer or Rishkar, Peema Renegade.

Cackling Prowler (C): This is an improvement over Bulette / Sabertooth Mauler, but the lack of evasions caps my interest. We also just got a 5/4 for 4-mana in Wickerfolk Thresher and a 6/6 in Wumpus Aberration.

Dwynen, Gilt-Leaf Daen (U): Rare downshift. I think Imperious Perfect is the better Elf lord.

Eager Trufflesnout (U): We have two 2-mana comparables to this with Intrepid Trufflesnout and Meriadoc Brandybuck and I think I like both of those better.

Elfsworn Giant (C): It’s a better [{Sporemound]] (though it doesn’t combo with Life and Limb, but the total P/T just isn’t comparable to things like Ridgescale Tusker, Hivespine Wolverine, or Auspicious Starrix.

Felling Blow (U): Strictly worse than Signature Slam.

Go Forth (C): I like that this can functionally replace a land, but the upside is pretty minor and also the two effects belong in strategies that are somewhat at odds with each other. Bushwhack probably fills that role better.

Razorgrass Invoker (C): Not that different from Wildheart Invoker.

Saurian Symbiote (C): Both modes are too far under-rate.

Slimy Piper (C): We now have 5+ 3/2s for , so the base mode here isn’t that exciting, but the “kicker” mode is potentially interesting. Then again, we just got Bark-Knuckle Boxer and that hasn’t done much.

Spined Tyrranax (U): The trigger costs too much, especially compared to Trollbred Guardian.

Treetop Snarespinner (C): Is Deathtouch and the ability worth just not being a 4/5 (Colossodactyl)? Probably not.

Woodland Liege (C): Unless you have a Beast-specific combo (Herd Baloth?), this isn’t going to trigger often enough.