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Magic: The Gathering Comprehensive Rules Changes

Shadowmoor to Eventide (Single Change View)

General changes

Old rule (Shadowmoor) New rule (Eventide)

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.

418.5e.

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