Something clicked in Sidon's brain at that. "The other Champions, they had powers of their own as well, did they not?" he asked. "I seem to recall that Champion Urbosa had control of lightning and Champion Daruk had a sort of protection field. Did they share their powers as well? I cannot be convinced that my sister did not share her healing with you."
That explained why he'd heard an echo of his sister's voice at the time that Link would have arrived. His sister had left a piece of herself behind in the young Hylian.