[RPG] Can True Polymorph be used repeatedly to never age


Let's say we have a level 20 human wizard named Dumbledore. Dumbledore is wicked old. Dumbledore would like to not die of old age, as he has a few enemies left to take care of. Can Dumbledore cast True Polymorph on himself, concentrate for the full duration, and permanently de-age himself into

  1. A younger version of any other creature
  2. A long-lived creature (dragon, elf, etc)

And if yes to any of these, will this permanent transformation extend Dumbledore's lifespan? Would doing so permit Dumbledore to repeatedly cast True Polymorph and never die of old age?

Note: Dumbledore could obviously still die of other causes, such as Power Word: Kill cast by a talented former student.

Best Answer

Yes you can. The spell never makes any specific claims about the age of a creature, only its challenge rating.

If you turn a creature into another kind of creature, the new form can be any kind you choose whose challenge rating is equal to or less than the target’s (or its level, if the target doesn’t have a challenge rating). [PHB 283]

So you could turn yourself into an elf or similarly long-lived creature which is also a level 20 wizard.

If you wanted to turn yourself creature like a dragon with the intent of doing this repeatedly, you need to be sure to note the spell casting abilities of your new form. From the spell description:

"The creature is limited in the actions it can perform by the nature of its new form, and it can’t speak, cast spells, or take any other action that requires hands or speech unless its new form is capable of such actions." [PHB 283]

If you choose a creature that can innately spellcast (or it has hands and can speak), then this isn't a problem.

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