Warrior · Protection · tier 3 · from level 20

Defiance

Rank 3/3

Increases all threat generated in Defensive stance by an additional 15% while a shield is equipped.

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.