卷軸scrolls痛苦之源卡牌資料圖鑑，痛苦之源是一個普通建築，你可以花費一個能量片(decay)召喚它，近戰中使用痛苦之源可以讓攻擊格具有毒藥效果。
英文原文
Description
Bitter Root is a common structure (Wall) that can be summoned from your hand for the cost of one Decay.
Abilities
When Bitter Root is attacked in melee combat, attacking unit becomes poisoned.
