Vedalken Shackles 218 (Modern Masters)

You may choose not to untap this artifact during your untap step. {2}, {T}: Gain control of target creature with power less than or equal to the number of Islands you control for as long as this artifact remains tapped.

NM - $11.80
LP - $9.50
MP - $7.10
HP - $4.80
DMG - $2.40