Magic: The Gathering Comprehensive Rules Changes - Future Sight to Core Set - Tenth Edition

Old rule (Future Sight)	New rule (Core Set - Tenth Edition)
424.4. [Click to view all changes.]
424.4. What a player actually needs to do to pay a cost may be changed or reduced by effects. If the mana component of a cost is reduced to nothing by cost reduction effects, it is considered to be {0}. Paying a cost altered by an effect counts as paying the original cost. Example: You play a spell with mana cost {W} that has kicker {1}. You choose to pay the kicker, but a cost reduction effect means you spend only {W} when paying for the spell. The spell's "if the kicker cost was paid" effect will be applied.	424.4. What a player actually needs to do to pay a cost may be changed or reduced by effects. If the mana component of a cost is reduced to nothing by cost reduction effects, it is considered to be {0}. Paying a cost changed or reduced by an effect counts as paying the original cost. Example: You play a spell with mana cost {W} that has kicker {1}. You choose to pay the kicker, but a cost reduction effect means you spend only {W} when paying for the spell. The spell's "if the kicker cost was paid" effect will be applied.

Old rule (Future Sight)

New rule (Core Set - Tenth Edition)

424.4.

What a player actually needs to do to pay a cost may be changed or reduced by effects. If the mana component of a cost is reduced to nothing by cost reduction effects, it is considered to be {0}. Paying a cost altered by an effect counts as paying the original cost.

Example: You play a spell with mana cost {W} that has kicker {1}. You choose to pay the kicker, but a cost reduction effect means you spend only {W} when paying for the spell. The spell's "if the kicker cost was paid" effect will be applied.

424.4.

What a player actually needs to do to pay a cost may be changed or reduced by effects. If the mana component of a cost is reduced to nothing by cost reduction effects, it is considered to be {0}. Paying a cost changed or reduced by an effect counts as paying the original cost.