Cloven Casting

• WWizards of the Coast2009-05-01
  Official Ruling
  If a modal spell is copied, the copy will have the same mode as the original.
• WWizards of the Coast2009-05-01
  Official Ruling
  This ability triggers only once for each multicolored instant or sorcery spell you cast. You can’t use a single Cloven Casting to copy the same spell twice.
• WWizards of the Coast2009-05-01
  Official Ruling
  You can copy the spell that caused Cloven Casting’s ability to trigger even if it’s been countered by the time that ability resolves.
• WWizards of the Coast2009-05-01
  Official Ruling
  The copy will have the same targets as the spell it’s copying unless you choose new ones. You may change any number of the targets, including all of them or none of them. The new targets must be legal.
• WWizards of the Coast2009-05-01
  Official Ruling
  Abilities that trigger when a spell is cast (such as this ability or cascade) won’t trigger when you create a copy this way.

Rulings via Scryfall