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

Old rule (Planar Chaos)	New rule (Future Sight)
418.5e. [Click to view all changes.]
418.5e. An object's timestamp is the time it entered the zone it's currently in, with three exceptions: (a) If two or more objects enter a zone (or zones) simultaneously, the active player determines their timestamp order at the time they enter that zone. (b) Whenever an Aura or Equipment becomes attached to a permanent, the Aura or Equipment receives a new timestamp. (c) Permanents that phase in keep the same timestamps they had when they phased out.	418.5e. An object's timestamp is the time it entered the zone it's currently in, with three exceptions: (a) If two or more objects enter a zone (or zones) simultaneously, the active player determines their timestamp order at the time they enter that zone. (b) Whenever an Aura, Equipment, or Fortification becomes attached to an object or player, the Aura, Equipment, or Fortification receives a new timestamp. (c) Permanents that phase in keep the same timestamps they had when they phased out.

Old rule (Planar Chaos)

New rule (Future Sight)

418.5e.

An object's timestamp is the time it entered the zone it's currently in, with three exceptions: (a) If two or more objects enter a zone (or zones) simultaneously, the active player determines their timestamp order at the time they enter that zone. (b) Whenever an Aura or Equipment becomes attached to a permanent, the Aura or Equipment receives a new timestamp. (c) Permanents that phase in keep the same timestamps they had when they phased out.

418.5e.

An object's timestamp is the time it entered the zone it's currently in, with three exceptions: (a) If two or more objects enter a zone (or zones) simultaneously, the active player determines their timestamp order at the time they enter that zone. (b) Whenever an Aura, Equipment, or Fortification becomes attached to an object or player, the Aura, Equipment, or Fortification receives a new timestamp. (c) Permanents that phase in keep the same timestamps they had when they phased out.