Fang, Roku's Companion

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.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o3zur1pvvpb1hrxnb58f3.