Immobilizing Ink 
Enchantment — Aura
Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
Enchanted creature has ", Discard a card: Untap this creature."
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL