Tome of Devouring Shadows

Rare, Held In Off-hand, Trinket, item level 52, item 19989

Changed from Classic: the tooltip differs on the highlighted lines below.

Binds when picked up

Held In Off-hand

+6 Nature Resistance

Equip: +20 Shadow Spell Damage

"Some secrets are best left unknown."

Changed from Classic (see below).

Classic's version

Binds when picked up

Held In Off-hand

+6 Nature Resistance

Equip: Increases damage done by Shadow spells and effects by up to 20.

"Some secrets are best left unknown."