Cherax, Reef-Dwelling

{u}{t}: Tap target creature.
Target creature does not untap as long as
Cherax, Reef-Dwelling remains tapped on the battlefield. (You may choose to not untap
Cherax, Reef-Dwelling during your untap step.)
They live in warm coastal reefs, feeding on
smaller fish and plants. Do not underestimate
their powerful grip...
— Naireh, Ketria Elementalist