Slavery is commonplace in this setting. Slaves routinely have their tongues cut out, to prevent them organising a resistance movement, or back-chatting their owners.

The party has freed some slaves after decades of enslavement, and would like to **permanently** restore their ability to speak.

**What is the cheapest item, or lowest level spell, that can do this?**

* Healing magic that can restore missing body parts would suffice.
* A magical effect allowing the user to speak using a 'prosthetic voice' would also suffice.

I don't think the regular *Cure X Wounds* spells will work, as removing an entire appendage is a bit different to normal hit-point damage.

All 3.5 ed books are available.

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**Edit 1:**

This campaign is set in the world of The Elder Scrolls: Morrowind. The slaves are mostly Argonians (lizard-people) and Khajiit (cat-people). Mechanically, they are Humanoid-type creatures.

**Edit 2:**

The party's motivation for re-growing the slaves' tongues is to **symbolise their freedom**, by **permanently** reversing the trauma inflicted when they were enslaved. 

The various answers below also give temporary means of communicating with the slaves until the party is powerful enough to effect a permanent cure; these answers are also useful and appreciated.