Mint, but it was an absolute disaster of a game. I made a huge mistake early on by trying to focus-fire Bugbear instead of playing defensively and whittling down Ermine, which meant piling Crocodile on the Naturalist and going for damage instead of Rhino and going for tanking. Stacked damage reduction and redirection could have kept my team around long enough for Nightmist and Harpy to really get going, and Ermine alone wouldn’t have given Bugbear enough of a boost.
Instead, Harpy got killed right before I finally took Bugbear out, and then so did Setback, and then Nightmist and Fright Train dropped just about together, and then Akash’Thriya went down at almost the same time as Ermine, leaving the Naturalist to face down Biomancer and Plague Rat alone from behind stacked defenses.
In the end, I managed to win by keeping Naturalist just below Biomancer and waiting for Magma’s Rage to torch the rogue fleshcrafter, then shifted into Crocodile to finish him, then shifted back into rhino to avoid counter-murder by Plague Rat, then healed up a bit before shifting back to Crocodile to nova Plague Rat to death. It was tight. There were multiple times that Naturalist was at 4-8 HP.