709.5g
Some spells and abilities instruct a player to “lock” half of a permanent. To lock half of a permanent, a player chooses an unlocked half of that permanent, and that permanent loses the appropriate unlocked designation.
Some spells and abilities instruct a player to “lock” half of a permanent. To lock half of a permanent, a player chooses an unlocked half of that permanent, and that permanent loses the appropriate unlocked designation.