Disclaimer: This answer was written before the addition of the 5e tag. The content below may not be applicable to that specific edition of D&D.
D&D 3.5's Draconomicon actually has several examples of dragons having specific smells. It seems to vary by dragonflight color:
Black - Smells like rotten vegetation and foul water.
Blue - Smells like ...
A precedent exists for the answer to possibly be 'yes', but this is still very much a case-by-case/DM's choice basis.
The entry on half-dragons in the Monster Manual cites that they come from (in some cases) a coupling between a dragon polymorphed into another form and another creature (presumably one compatible with the polymorphed form). This would imply ...
From the Polymorph spell description:
This spell can't affect a target that has 0 hit points.
Of note: this caveat was added in the Player's Handbook Errata, as pointed out by Thyzer, after the original printing. Some PHBs may not contain this text, but it nonetheless is the intended rules.
Other spells with polymorphing effects don't work either:
Wizards of the Coast made numerous attempts to errata the unbalanced polymorph spell family in D&D 3.0 and 3.5, before eventually accepting that the spell was inherently broken due to its unbounded versatility. In 2006, Wizards decisively addressed the issue by sidelining polymorph, removing dependencies on the spell throughout the entire game, and ...
This may seem overpowered but there are several drawbacks to the spell:
The target's game statistics, including mental ability scores, are
replaced by the statistics of the chosen beast. It retains its
alignment and personality.
If you transform them into a T-Rex they become an unintelligent beast with an INT score of 2.
The creature is ...
The main issues with Polymorph are:
Monsters aren't designed for PC use. Many monsters have abilities that are overpowered or disruptive in the hands of PCs, as they were designed primarily as opponents and weren't balanced with polymorph in mind.
Versatility is power. Polymorph is by far one of the most versatile spells in the book. A more versatile ...
Only your DM knows
The rules of D&D 5e do not cover pregnancy. It is a story element, not a game mechanic. As such, it is entirely decided by each DM.
Do dragons even "get pregnant" in your DM's world? The Monster Manual mentions eggs, but are they laid fertilized, or is that done afterwards? Do dragons even have 2 sexes? We can safely say that they ...
The transformation lasts for the duration, or until the target drops to 0 hit points or dies. If you concentrate on this spell for the full duration, the transformation becomes permanent.
Given the positioning of the second sentence, I believe it is safe to assume that it is providing an exception to the transformation ending by either of the two methods ...
They are not shapechangers.
Shapechanger is a Tag (Monster Manual p.7) given to certain creatures. Becoming a druid doesn't change you from Humanoid (elf) to Humanoid (elf, shapechanger) in the same way that learning the polymorph spell doesn't change your sorcerer to a shapechanger.
The spell monstrous physique iii allows you to polymorph into a monstrous humanoid, which is minotaur's type. Natural Cunning is listed as one of the abilities you can gain from this spell, if the base form has it, and the minotaur does:
Natural Cunning (Ex) Although minotaurs are not especially intelligent, they possess innate cunning and logical ...
The true polymorph spell says:
You can turn an object into any kind of creature, as long as the creature’s size is no larger than the object’s size and the creature’s challenge rating is 9 or lower. The creature is friendly to you and your companions. It acts on each of your turns. You decide what action it takes and how it moves. The DM has its ...
Polymorph (4th level spell) is limited in what it can turn things into.
From the spell text (second paragraph) :
The new form can be any beast whose challenge rating is equal to or
less than the target’s (or the target’s level, if it doesn’t have a
challenge rating). The target’s game statistics, including mental
ability scores, are replaced by ...
Wizards of the Coast explain this problem here. The ways this spell is used and abused are summarized here.
As some examples of this whole subschool being broken:
Alter Self into Avariel - you just got yourself a cheaper and longer version of Fly two levels early
Start as an outsider and Alter Self into Ravid - you just got yourself +15 of Natural Armor (...
In this context "Large" means of the Large size category (Player's Handbook p.191), meaning it occupies a 10' by 10' space. The exact phrase is the following:
The yuan-ti can use its action to polymorph into a Large snake, or back into its true form.
Note that the capital-L Large refers to a size category, not a general indication of bigness.
No, you transform back before you can be instantly killed
The rule for instant death says:
Massive damage can kill you instantly. When damage reduces you to 0 hit points and there is damage remaining, you die if the remaining damage equals or exceeds your hit point maximum.
The important part to note is that it only calculates the damage needed to ...
I don't see why not.
It's not exactly a practical way of going about things, but it would be possible (by 17th level money isn't really an object). The spell says you can transform a creature into an object. Turning a Goblin into a lump of adamantine is totally within that realm of possibility (tbh, why stop there, I'd dream a bit bigger, and maybe a bit ...
I was about to answer "Yes", until I noticed this line in Baleful Polymorph:
Any polymorph effects on the target are automatically dispelled when a target fails to resist the effects of baleful polymorph, and as long as baleful polymorph remains in effect, the target cannot use other polymorph spells or effects to assume a new form.
So it is a ...
Unfortunately, there are no rules for this circumstance, so if our itsy-bitsy-spider-druid runs out of Wild Shape while trying to climb up a downspout, we have to come up with a ruling, and there are three routes here:
The generous route is to let the druid stay shaped until they exit the downspout (or other space that can't fit their humanoid form at all), ...
From the text from the Remove Curse spell, emphasis mine:
Remove curse can remove all curses on an object or a creature.
So barring DM Fiat, you should be fine purchasing one casting of the Remove Curse spell, provided the person you buy the spell from can meet the DC for the curse removal by caster level check about one hundred times. To completely ...
The Sorcerer retains their Giant Ape form with 1 HP
Death ward specifies the following
The first time the target would drop to 0 hit points as a result of taking damage, the target instead drops to 1 hit point, and the spell ends.
Emphasis mine. The point here being, the Sorcerer was the target of the spell. Their hit points were replaced with that of ...
You maintain concentration, regardless of the form. Your ability to concentrate on a spell does not depend on any mental statistic. You can also continue to concentrate on a spell, even if you cannot cast spells. For example, Silence, Druid Wildshape, and the Antimagic Field spell all restrict spellcasting, but not do not restrict your ability to concentrate....
The rule on this was changed in the Monster Manual errata (and recent printings):
If a creature assumes the form of a legendary creature, such as through a
spell, it doesn’t gain that form’s legendary actions, lair actions,
or regional effects.
What's important to you here, the fluff or the crunch?
"Fluff" is the game world that the DM describes and the players interacts with. "Crunch" is the actual game rules mechanics. For example, if you had a player who described their character as a lightly armored duelist fighter who specialized in the rapier, that's their fluff, while the crunch might be ...
No, the polymorphed creature can only use actions that a normal creature with the new form would be able to do. It comes directly from the definition of “game statistics”. The Statistics section of the The Monsters Manual starts with:
A monster's statistics, sometimes referred to as its stat block, provide the essential information that you need to run ...
Short answer: Yes you can, but it could get complicated
Addressing the elements in reverse order:
The Soul of a Warrior Trapped in a Toad's Body
Can a character True Polymorph into itself as a means of reversing a True Polymorph someone permanently cast against them earlier? (ex: A warrior is permanently transformed into a toad. The party wizard shows ...
No (kinda1), because you can't stay True Polymorphed after the session ends - the effect is always dispelled.
During the session, you can keep playing the character. It's still the same entity/person, because True Polymorph says:
It retains its alignment and personality.
After the session, you can't stay polymorphed because the Season 7 FAQ updated the ...
It may help to consider this in a step by step approach:
The giant ape gets hit for 50 damage while maintaining concentration on a Polymorph spell.
The giant ape attempts to make a concentration save to maintain the Polymorph spell. This save is attempted using the giant ape's constitution score, not the Wizard's.
The concentration save fails.
This is unclear, and it's ultimately the DM's call. Beyond the general "what the DM says goes", it's not spelled out what exactly it means to have seen an animal. There's plenty of room for the DM to say that it's not seeing the shape that matters, but seeing a living animal with your mystical druidic connection, which won't work with a mere polymorphed form....
Turn 'em and Burn 'em
This will work exactly as described in your question. True Polymorph is concentration, so that will use up your concentration during this event. Turn Undead does NOT require concentration, so you can just as easily Destroy the Undead (which, given your ability to cast True Polymorph), shouldn't be a problem in terms of CR.
The wording quoted in the question is from an earlier print of the PHB. In later printings, and in the SRD (v5.1, p.188) it reads:
The transformation lasts for the duration, or until the target drops to 0 hit points or dies. If you concentrate on this spell for the full duration, the transformation lasts until it is dispelled
This wording seems to ...