It may be a little weird, but RAW (rule as written) being polymorphed does not make lose concentration in any way. Of course, if you cast polymorph upon yourself and then you are hit, you have to do the CON saving throw to keep concentrating.
Can polymorph be Upcast?
However potency isn’t defined by the game and so will depend on DM adjudication. The spell being cast at a higher level would probably be interpreted as a more potent version (I would certainly rule so). But as polymorph has no innate benefits from being upcast, you might not see it cast at higher levels very often.
Do you lose alignment and personality in polymorph?
It retains its alignment and personality. You effectively lose everything but your personality. You lose class abilities, feats, racial traits, etc. You can effectively put away your character sheet and replace it with the stat block out of the Monster Manual.
How does an ongoing effect work in polymorph?
None of the target’s statistics carry over other than personality and alignment. The target uses the monster’s stat block and nothing else. Conditions or ongoing effects aren’t statistics, so they’re not replaced in any way and do carry over. How do ongoing effects work with polymorph? Any ongoing effects continue to work as normal.
How do you change creature type in polymorph?
For Polymorph, replace the target’s character sheet or stat block with the new stat block. Magical change (i.e. Ancient Dragon Shapechange): changes creature type as new stat block is used Non-magical change (i.e. Vampire, Werewolf): does not change creature type as same stat block is used
What is the duration of the polymorph spell?
The Polymorph spell states a Duration of Concentration, up to 1 hour. Concentration rule states nothing about losing it if losing intelligence (and even Feeblemind states that the creature can identify friends, follow them, and even protect them). The Polymorph spell states that the creature retains its personality (and alignment).
