Guthan the Infested

Guthan the Infested is the third oldest of the six Barrow brothers. He attacks with melee, and his set effect allows him to heal himself at a 1:1 ratio, so if he deals 200 life points and the effect occurs, he would recover 200 life points. His effect is visible; three ghostly entities surround Guthan's opponents and circle around them in an upwards motion. Even though he uses his Warspear, it has the same sound effect as Verac's flail.

Some players "tank mage" Guthan. This means that they will mage while wearing their melee armour, such as rune, granite, etc. Even though wearing metal while maging reduces your mage bonus significantly, Guthan's magic defence is so poor that you will be hitting almost as accurate as with Mystic or other robes. This strategy is used so he won't be able to hit you often, thus, reducing the chances of healing himself. Alternatively some people use the protect from melee prayer which avoids the need to wear armour while spell casting and blocks all of Guthan's damage and most of his healing. However, he does heal what he would have hit if you use prayer.

Black Salamander is recommended as it is not affected by the player's magic attack bonus too much. However, slayer dart may be used as a substitute.

He is equipped with his own set of armour, Guthan's set, which is obtainable (albeit rarely) by players who complete the Barrows.

Trivia

 * Guthan is the third oldest brother. All barrows brothers' ages are based on the place they are sorted alphabetically.
 * Due to the fact that he can heal from attacks, Guthan may have been the master of Constitution at his time.