Druid · Restoration · tier 5 · from level 30

Improved Tranquility

Rank 2/2

Reduces threat caused by Tranquility by 100% and its cooldown by 60%.

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

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