This is what makes it so invaluable an ally of every other passion. (religion-online.org)
Hero characters may become invaluable allies, while others will instead become enemy generals and rally their own forces against you. (nintendo-insider.com)
During the civil war, international oil companies endured and proved invaluable allies to the ruling party, the People's Movement for the Liberation of Angola (MPLA). (blog.politics.ox.ac.uk)