The Key to Technicka

If tapped at the end of your turn discard a card or
target opponent gains control of the Key.
You may choose not to untap the Key during your untap step.
{t}Tap target legendary permanent and its
activated abilities cant be activated
for as long the Key remains tapped.
Only as a sorcery.
{2}Target opponent gains control of the Key:
Draw a card.