Unity fares well in arena. I soon learned that they are not fireproof, and as such the single dragon it it killed everything. Hellhounds are epic. My god. They one-shot Ursas. The new Unity is godly. Your average unarmed Purple can take down swarms of foes (aka unarmed buffalo) far larger than themselves. During the megabeast testing, a Twilight one can only fight off a Trojen. Rocs are about evenly mached with a standered one, with Hydras being surprisingly boss, eating them up like candy. (fitting, considering that in-story they could only pressure them to flee.) Dragons kill them with a firey puff no matter the actual caste(small size- fat= dead alicorn), while they are rather even vs a giant star-bear. They kill any Royal creature they come across, due to there inherent state bonuses. Which means that a Azure one can take down three Royal Buffalo in a few seconds. It is wonderful.
The dogs are interesting. Hellhounds are durable (chiten was a surprise

)but do not seem to have the steel-mauling claws of lore. Also, disapointing swarms of them vs Alicorns show that they cannot even hit them. Something must be done. Something....
primal.
Also, something amusing: Apperantly, Reggi was more optimised than what one would think. Steel Claws are deadly in combat, and much fun is to be had slaying ponies in midflight with what seems to be the next whips of the wasteland. Best use of the knife skill ever.