Crown of Frost

Flash
Equipped Creature gains +2/+2 and "Whenever
the Equipped Creature attacks or blocks, tap
target permanent. It doesn't untap during its
controller's next untap step."
{s}{w}{u}: Attach Crown of Frost to target creature
you control.
Equip: Discard a card, {4}
The crown required a cold or sorrowed heart. The
Lady Light named it her Crown of Grief."