Ranni, the Witch

When Ranni, the Witch enters the battlefield
scry X where X is the amount of snow mana
used to cast this spell. You then draw three cards.
When Ranni, the Witch deals combat damage
to a creature, tap that creature. That creature
doesn't untap during its controllers next untap
step.
"Now cometh the age of the stars. A thousand year
voyage under the wisdom of the Moon."