Hivis of the Scale is a rare Legendary Creature — Lizard Shaman card from Mirage (MIR), collector number 182. Current market price: $1.24, TCGplayer market prices via Scryfall.
You may choose not to untap Hivis during your untap step. {T}: Gain control of target Dragon for as long as you control Hivis and Hivis remains tapped.