Drow Spider Staff

The top of this adamantine staff features an intricate spider design.
{1} The staff can be wielded as a quarterstaff doing an additional 1d6 poison damage
{2} +1 to attack and +1 to damage
{3} The staff has 10 charges that can be used to power spider climb (1 charge) or web (2 charges). The staff recharges 1d6+4 charges each day. Roll
a d20 if the last charged is used; on a 1, the staff explodes doing 2d6 damage in a 10-foot radius