Polis' Bulwark

While wearing and attuned to this shield, once
per day you may activate each ability imbued in
the shield.
Manufactured Equilibrium - When making an
attack roll you can forgo rolling to receive a 10
on the die.
Raise Defenses - As a bonus action you cause a
nonmagical wall of marble to spring forth from
the ground in front of you. The wall is 6" thick,
10' tall, and 15' across. It has an AC 15, 150 hit
points, and lasts 24 hours.