Anti-Magic Shell

45 sec cooldown
Instant
Surrounds the Death Knight in an Anti-Magic Shell, absorbing 75% of the damage dealt by harmful spells (up to a maximum of 50% of the Death Knight's health) and preventing application of harmful magical effects. Lasts 5 sec.

Aura tooltip

Spell damage reduced by 75%. Immune to magic debuffs.
5 seconds remaining

Effect #1

Apply Aura: School Absorb (126)
Value: 75

Effect #2

Apply Aura: Unknown aura #267 (126)
Value: 50