A couple of disclaimers about this, first of all this may not be possible as far as mechanics I am not a computer person so if a spell cant be added into the server completely ignore everything that follows. Also, the intention of the spell im advocating I think would be a fun tool for rp, not something I envision being made into some OP spell.
Anyways, with how much lore there was in the time period the server was set about wizards of the woods turning people into toads, it seems like this would be especially prevalent in barovia. Playing an evil druid, Ive always thought it would lead to a lot of fun RP if there was a polymorph other spell. My intention is not for it to do anything to high level characters and be an easy way to kill them (thats what finger of death and destruction are for
) but instead an RP mechanism that could be used. Obviously the duration wouldnt be pernament, although honestly I think it would be really unique if someone role played their character being stuck as a toad until they managed to take the necessary measures to reverse the effects. The forms I would recommend would include, Deer, Rat, Toad, and if any of the developers thought another form was fitting than by all means add to the diversity of the role play. I would recommend that the spell has a low spell resistance check, and gives a fortitude check as well to prevent it from being horribly abused to gain an edge in combat, and also to make it clear what the purpose of the spell is. At least what I envision is you have a hunter who has grievous acts against nature, or someone who horribly distorts the balance that it is your druids role to keep, I think this could be a really interesting roleplay tool to lead to characters on the server evolving their roleplay due to a unique experience, and or them deciding to seek vengeance on the druid who did this to them. Let me know your thoughts even if you think my idea is terrible, I am curious.