English (Source)
1 Stack: <Highlight>+{AttackSpeed}% (+{AttackSpeedPerCommanderLevel}% per Commander level</> Attack speed.
2 Stacks: <Highlight>+1</> Module slot.
3 Stacks: Whenever this trap or tower attacks it gains <Highlight>1x</><Keyword>EBuffType::BUILDUP</>
4 Stacks: Whenever this trap or tower attacks there's a <Highlight>{BonusAttackChance}% (+{BonusAttackChancePerCommanderLevel}% per Commander level)</> chance to attack again.
Chinese Translation
1 层：<Highlight>+{AttackSpeed}%（每个指挥官等级 +{AttackSpeedPerCommanderLevel}%）</> 攻击速度。
2 层：<Highlight>+1</> 模块槽位。
3 层：每当该陷阱或塔攻击时，获得 <Highlight>1x</><Keyword>EBuffType::BUILDUP</>
4 层：每当该陷阱或塔攻击时，有 <Highlight>{BonusAttackChance}%（每个指挥官等级 +{BonusAttackChancePerCommanderLevel}%）</> 的几率再次攻击。