Warrior · Arms · tier 6 · from level 35

Improved Hamstring

Rank 3/3

Gives your Hamstring ability a 15% chance to immobilize the target for 5 sec.

Doesn't change the damage or healing of any Warrior spell.

Averages, counting crits and misses, for a level 60 Warrior with a typical weapon and no other gear or buffs, against a target your level. Worked out from the game's own data, the same way as the Foresight addon.