Dixx, Flurry of Blades

Haste, Flash, Vigilance, Double Strike,
Lifelink, Menace
You may tap Dixx as she attacks. If you do, Dixx
deals damage equal to her power to each creature
the defending player controls.
Whenever Dixx deals combat damage to a
creature, tap that creature. That creature doesn't
untap during it's controller's next untap step.