Eye of the deep one

While attuned
{b}Dark vision 100ft
{g}+2 and advantage on all rolls dealing with
Grappling
{u} After a long rest roll a d4
1. Your spell save DC increases by +1
2. Your spell attack bonus increases by+1
3. Deal +2 necrotic damage with 'eldritch blast'
4. Your AC increases by +1