New action "Surgical Strike Building". See hrm Feature #848643
"Surgical Strike Building" destroys a player selected building in the target city. You can adjust its odds with Action_Odds_Pct. You take away move fragments when the action is successfully performed with Action_Success_Actor_Move_Cost.
The usefulness of this action is unfortunately mostly limited to scenarios like "make the game loss unit powerful enough to tempt the player to use it". It is too powerful. You can't specify that certain buildings, like great wonders, can't be destroyed. A player can't use a unit to automatically defend against this action. (Combining autoattack, combat_rules.will_never and Provoking may work but that will be triggered once the actor unit moves next to the city, not when its starts doing "Surgical Strike Building").Example.
Allows the Leader to destroy visible buildings in enemy cities. Price of success: all moves. Probability of success: 50%