Hamstorm

From Guild Wars Wiki

Hamstorm is a Warrior/Elementalist build that combines the Swordsmanship skill Hamstring and Fire Magic spell Firestorm. The build was featured on one of the inside flaps of the Guild Wars Prophecies box, where it was given as an example of "superior strategy". Most people who participate in PvP combat decide otherwise:

• Warriors have barely enough energy to use the skill combination in the first place (20 energy for Hamstring and Firestorm combined) while a level 20 warrior has 20 energy, without attempting to improve it.
• An opponent can remove the condition, and leave the area of effect of Firestorm before the spell does a decent amount of damage.
• Even if they don't remove it, they can just walk out of the firestorm taking minimal damage.

The build is now well known as a joke build but you can see that a little bit of thought was put into it.

Little Thom uses an expanded version of Hamstorm in The Norn Fighting Tournament. The easiest way to avoid damage from him, is obviously, to move out of the way of Firestorm and Breath of Fire, while keeping the cripple condition removed, by use of various skills (Smite Condition, for example).