Mage · Fire · tier 4 · from level 25

Improved Fire Ward

Rank 2/2

Causes your Fire Ward to have a 20% chance to reflect Fire spells while active.

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

Averages, counting crits and misses, for a level 60 Mage 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.