Magic: The Gathering Comprehensive Rules Changes - Core Set - Ninth Edition to Ravnica: City of Guilds

Old rule (Core Set - Ninth Edition)	New rule (Ravnica: City of Guilds)
Leaves Play [Click to view all changes.]
Leaves Play A permanent leaves play when it moves from the in-play zone to any other zone. See rule 410.10c. If a token leaves play, it ceases to exist. This is a state-based effect. See rule 420.5. If a permanent leaves play and later returns to play, it's treated as an entirely new permanent with no "memory" of anything from its former existence. (Phasing is an exception to this; see rule 502.15, "Phasing.")	Leaves Play A permanent leaves play when it moves from the in-play zone to any other zone (see rule 410.10c) or when its owner leaves the game (see rule 600.4a). If a token leaves play, it ceases to exist. This is a state-based effect. See rule 420.5. If a permanent leaves play and later returns to play, it's treated as an entirely new permanent with no "memory" of anything from its former existence. (Phasing is an exception to this; see rule 502.15, "Phasing." Permanents that phase out also don't trigger any comes-into-play or leaves-play abilities.)

Old rule (Core Set - Ninth Edition)

New rule (Ravnica: City of Guilds)

Leaves Play [Click to view all changes.]

Leaves Play

A permanent leaves play when it moves from the in-play zone to any other zone. See rule 410.10c. If a token leaves play, it ceases to exist. This is a state-based effect. See rule 420.5. If a permanent leaves play and later returns to play, it's treated as an entirely new permanent with no "memory" of anything from its former existence. (Phasing is an exception to this; see rule 502.15, "Phasing.")

Leaves Play

A permanent leaves play when it moves from the in-play zone to any other zone (see rule 410.10c) or when its owner leaves the game (see rule 600.4a). If a token leaves play, it ceases to exist. This is a state-based effect. See rule 420.5. If a permanent leaves play and later returns to play, it's treated as an entirely new permanent with no "memory" of anything from its former existence. (Phasing is an exception to this; see rule 502.15, "Phasing." Permanents that phase out also don't trigger any comes-into-play or leaves-play abilities.)