Fang, Roku's Companion (Avatar: The Last Airbender Eternal)

Legendary Creature Ñ Dragon - Flying
Whenever Fang attacks, another target legendary creature you control gets +X/+0 until end of turn, where X is Fang's power.
When Fang dies, if he wasn't a Spirit, return this card to the battlefield under your control. He's a Spirit in addition to his other types.