Because the land already had Blight. As the rules state: In a land with no Blight, a Vitality token prevents 1 Blight from being added and is then removed.
Why didn't Vitality stop a Blight being added to a land?
Last Updated: 3d
Because the land already had Blight. As the rules state: In a land with no Blight, a Vitality token prevents 1 Blight from being added and is then removed.