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

Old rule (Planar Chaos)	New rule (Future Sight)
406.1. [Click to view all changes.]
406.1. A mana ability is either (a) an activated ability that could put mana into a player's mana pool when it resolves or (b) a triggered ability that triggers from a mana ability and could produce additional mana. A mana ability can generate other effects at the same time it produces mana.	406.1. A mana ability is either (a) an activated ability without a target that could put mana into a player's mana pool when it resolves or (b) a triggered ability without a target that triggers from a mana ability and could produce additional mana. A mana ability can generate other effects at the same time it produces mana.

Old rule (Planar Chaos)

New rule (Future Sight)

406.1.

A mana ability is either (a) an activated ability that could put mana into a player's mana pool when it resolves or (b) a triggered ability that triggers from a mana ability and could produce additional mana. A mana ability can generate other effects at the same time it produces mana.

406.1.

A mana ability is either (a) an activated ability without a target that could put mana into a player's mana pool when it resolves or (b) a triggered ability without a target that triggers from a mana ability and could produce additional mana. A mana ability can generate other effects at the same time it produces mana.