Green Scroll

The Green Scroll (背水護符, Haisui Gofu, lit. Backwater Talisman), otherwise originally known as the Power Rune, is an item found first in Dynasty Warriors 4: Xtreme Legends and Dynasty Warriors 5. It increases the user's overall attack by an invisible amount, all while making them take more damage; thus, its attack power increase can stack with generic attack power boosts such as the Tiger Amulet, though when paired with a maxed-out-defense stat plus a max level Tortoise Amulet, possible-flinching resistance is still in play since as aforementioned, the side-effect of the item is merely taking extra damage as opposed to directly affecting durability.

In Warriors Orochi 3 it is reprised in the form of the Spear of Sacrifice (背水矛, Haisuibō, lit. Backwater Lance) and other similar items (only this time the stats are directly/visually affected when equipping them in the item menus). The Rigor (猛砕, Mōsai, lit. Fierce Smashing) weapon attribute in the same Orochi installment also functions in a similar vein (free critical hits on all charge attacks at the cost of doubling the damage taken), along with Berserker (猛襲, Mōshū, lit. Fierce Assault) in Warriors Orochi 4 (same as Rigor, but enhances normal attacks instead).

In most circumstances especially in 4: Xtreme Legends, a Power Rune setup alongside a maximum level Tiger Amulet, Herbal Remedy and/or percentage damage-elemental orb (such as Lightning, Blast or Poison) can allow for most charge attacks executed to be completely unblockable due to sheer raw power no matter the AI's level via difficulty, especially if the player is under the effects of a War God's Axe at the time.

How to Unlock

 * Dynasty Warriors 5 - Battle of Jie Ting, Shu forces; Rescue Ma Su and defend the ally main camp.
 * Dynasty Warriors 5: Xtreme Legends - Battle of Han Shui Legend Mode; Defeat Xu Huang after he destroys the bridge.