The Exertion Rune (どりよくの紋章, Doriyoku no Monshō) is a rune which appears in Suikoden II.
Information
This rune could not be borne by an individual, and had to be attached to a weapon. This rune had the ability of increasing the attack power of the weapon user as the battle steadily progressed.
Exertion Rune ATK * (1 + 0.20 * (number of battle rounds) ) until the multiplier reaches 2.2 on the 6th round. This means the bearer starts the battle with ATK x1.2.