Magic: The Gathering Comprehensive Rules Changes - Planar Chaos to Future Sight

Old rule (Planar Chaos)	New rule (Future Sight)
502.71a. [Click to view all changes.]
	502.71a. Transfigure is an activated ability. "Transfigure [cost]" means "[Cost], Sacrifice this permanent: Search your library for a creature card with the same converted mana cost as this permanent and put it into play. Then shuffle your library. Play this ability only any time you could play a sorcery."

Old rule (Planar Chaos)

New rule (Future Sight)

502.71a.

Transfigure is an activated ability. "Transfigure [cost]" means "[Cost], Sacrifice this permanent: Search your library for a creature card with the same converted mana cost as this permanent and put it into play. Then shuffle your library. Play this ability only any time you could play a sorcery."