Voss |
At 1? Almost certainly nothing. The spell it mimics is handing out flight, scent, higher base speed and other utility effects that are kind of a big bonus before level 5.
Druids and the feral hunter archetype seem earliest at 4. Though the feral hunter actually has less options (animal only, ever), so druids have them beat out for options, getting elemental forms at 6 and plant at 8.
Imbicatus |
Metamorph alchemist can change shape as a wild-shape like ability at level one. But it trades all spellcasting and bombs to do so, and doesn't get access to all the scouting forms that wild shape can give. On the other hand, it can infiltrate a humanoid group and has better combat form options, and keeps access to mutagens.