When you take damage over 30% of your Health in 3 seconds, it grants [(25 + 50) + (20%) Spell Power] for 5 sec. (Cooldown 30 seconds).
Modifications:
upgraded:While shielded, gain an additional 10% Magic Resist.overclocked:While shielded, gain an additional 10% Magic Resist.
Now activates from damage over 25% of player's Health.
Calmness of heart is what matters.