Rule 201.5b

If an ability of an object refers to that object by name, and an object with a different name gains that ability, each instance of the first name in the gained ability that refers to the first object by name should be treated as the second name. Example: Quicksilver Elemental says, in part, “{U}: This creature gains all activated abilities of target creature until end of turn.” If it gains an ability that says “{BB}: Regenerate Skithiryx,” activating that ability will regenerate Quicksilver Elemental, not the Skithiryx, the Blight Dragon it gained the ability from. Example: Glacial Ray is an instant with splice onto Arcane that says “Glacial Ray deals 2 damage to any target.” If it’s spliced onto a Kodama’s Reach, that Kodama’s Reach deals 2 damage to the target. Example: The Ever-Changing ’Dane says “{1}, Sacrifice another creature: The Ever-Changing ’Dane becomes a copy of the sacrificed creature, except it has this ability.” Its ability is activated sacrificing a Runeclaw Bear. The Ever-Changing ’Dane becomes a copy of Runeclaw Bear and gains an ability that should be treated as saying “{1}, Sacrifice another creature: Runeclaw Bear becomes a copy of the sacrificed creature, except it has this ability.”