"We have to all act as one," said Nokama.  "Concentrate.  We have grown so used to using our powers to fight; maybe we have ignored their ability to heal."
One by one, the Toa summoned their elemental energies.  The outflow of power had to be tightly controlled -- it would not do to burn, freeze, or encase the Rahi in stone.  As Nokama formed a sphere of water in midair, the other five Toa Metru focused minuscule amounts of raw energy into it.  When it was fully charged, Nokama released the sphere and let the liquid wash over the ash bear.
...
The ash bear twitched and tried to raise her head.  It took her a few tried, but once she had fully revived, she let out a roar and rolled onto her feet.

Web of the visorak, Greg Farshtey, p`92-93