Magic: The Gathering Comprehensive Rules Changes - Eventide to Shards of Alara

Old rule (Eventide)	New rule (Shards of Alara)
502.15m. [Click to view all changes.]
502.15m. A permanent that phases in can attack and tap to play abilities as though it had haste. This applies even if that permanent phased out and phased back in the turn it came into play. The permanent remains able to attack and tap to play abilities until it changes controllers or leaves play.	502.15m. A permanent that phases in can attack or use activated abilities whose cost includes the tap symbol ({T}) or the untap symbol ({Q}) as though that permanent had haste. This applies even if that permanent phased out and phased back in the turn it came into play. The permanent remains able to do so until it changes controllers or leaves play.

Old rule (Eventide)

New rule (Shards of Alara)

502.15m.

A permanent that phases in can attack and tap to play abilities as though it had haste. This applies even if that permanent phased out and phased back in the turn it came into play. The permanent remains able to attack and tap to play abilities until it changes controllers or leaves play.

502.15m.

A permanent that phases in can attack or use activated abilities whose cost includes the tap symbol ({T}) or the untap symbol ({Q}) as though that permanent had haste. This applies even if that permanent phased out and phased back in the turn it came into play. The permanent remains able to do so until it changes controllers or leaves play.