Hi!

Definition of Deathblock: this effect grants immunity to all death spells and magical death effects.

Death Spells are:
-Circle of Death
-Destruction (spell)
-Finger of Death
-Phantasmal Killer
-Power Word: Kill
-Prismatic Ray
-Prismatic Spray
-Slay Living
-Symbol of Death
-Wail of the Banshee

Why using a Deathward item I am protected against Level Drain attacks and using a Deathblock, I am not?

Those spells under "magical death effects", what are they? Level Drain isn´t?

In other words, using a Deathblock item, against what I am protected?