That's why you need to dump the enemy in a empty vat and then use create water. lol
or for regular use just tie them up and pour a bucket you are always refiling into their mouth.
Yeah it's weird pixies can caste polymorph, like why do they need that spell at their CR. I don't think it makes sense for lore ether.
A way to fix the banishment type effect is make it so it can only be cast on a creature who is not a threat (like being tied up, unaware, or several levels below you) so its more balanced and keeps the idea of a witch/wizard curseing someone to become a frog. Scouting I'm fine with because it is a common fantasy trope. My only solution for being a combat buff is capping the health you can have per level or stronger forms have a lesser duration.
True but you should be able to choose a little. When things like woodland creature are so random( and I guess know polymorph) its hard to form tactics around become rather useless. If you have a mean DM it can be a hazard like turning into something useless and not contributing to combat or summoning something that ether dies immediately or just clogs the initiative not helping.
Deez nuts!!!!!!!!!!!!!