Contradict

• WWizards of the Coast2015-02-25
  Official Ruling
  A spell that can’t be countered by spells and abilities is a legal target for Contradict. The spell won’t be countered when Contradict resolves, but you’ll draw a card.
• WWizards of the Coast2015-02-25
  Official Ruling
  If the spell becomes an illegal target (because it’s left the stack, for example) when Contradict tries to resolve, Contradict won’t resolve and none of its effects will happen. You won’t draw a card.

Rulings via Scryfall