English (Source)
Every time a debuff is applied to an invader there's a <Highlight>{{CHANCE:percent}}%</> chance to apply <Highlight>1</> extra stack.
Japanese Translation
デバフが侵入者に適用されるたびに <Highlight>{{CHANCE:percent}}%</> の確率で追加のスタックを <Highlight>1</> 個適用します。