Every distinct wording since 2010, newest first.
July 12, 2019 · Core Set 2020
Some effects allow a player to change the target(s) of a spell or ability, and other effects allow a player to choose new targets for a spell or ability.
February 1, 2010 · Worldwake
If a player with priority casts a spell or activates an activated ability while another spell or ability is already on the stack, the new spell or ability has been cast or activated "in response to" the earlier spell or ability. The new spell or ability will resolve first. See rule 608, "Resolving Spells and Abilities."