Sand Squid

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
You may choose not to untap this creature during your untap step.
: Tap target creature. That creature doesn't untap during its controller's untap step for as long as this creature remains tapped.

EDHREC rank #26150

USD reference: $0.55 (~₱34.42) · Foil: $8.49 (~₱531.44)