English (Source)
Whenever an invader takes damage of the type (physical or magic) they have accumulated the least of, that damage is increased by <Highlight>{{DAMAGE_PERCENT:percent}}%</>.
French Translation
Chaque fois qu’un envahisseur subit le type de dégâts (physiques ou magiques) dont il a accumulé le moins, ces dégâts sont augmentés de <Highlight>{{DAMAGE_PERCENT:percent}}%</>.