Yakari - Volume 11 - Yakari and Nanabozo

Nanabozo, the Great Rabbit, is... well, a giant rabbit. He’s also a powerful
sorcerer, and Rainbow’s spirit guide, as Great Eagle is for Yakari. When he
appears to the young Sioux to tell him his charge has disappeared, little
Yakari is swept up in a quest that will make him turn into a giant, run on
smoke, fly, and travel to the ice banks where the polar bears play.