While inside the Maw or Torghast, each time you deal a critical strike, the Winds accumulate 26% of that effect, up to a cap of 22.3412 × SP per critical strike.
Every 20 sec sec, the Winds unleash, dealing Frost damage equal to the total accumulation and and surrounding you in the Winds for 20 sec, absorbing 100% of damage dealt by the Winds.