You searched for death guard
1. death guard
Syntax: cast 'death guard'
Death guard is a self‑cast, protective spell. If in battle your health goes
down to or below 0, this buff will protect you from dying in that it
restores your health by 15%. There is no cooldown upon casting this spell.
However, if you die, the buff will be stripped and you will be given a
cooldown equal to your level. This spell protects you from dying against
both monsters and players.
PermaDeath players cannot use this spell.