You have learned how to bolster your shields, barriers, and walls of magic beyond their normal capabilities in order to better control a battlefield and protect yourself and your allies. You gain the following benefits:

• When a spell you cast or a class feature you use grants a creature a protective ward with hit points (such as the Abjuration Wizard's ward, or the new barrier spell), you grant it extra hit points equal to your proficiency bonus.
• When a spell you cast creates a wall or barrier with no creature as a target (such as wall of stone or the new screen of protection spell), you increase the hit points of that object by an amount equal to twice your proficiency bonus, and you increase its AC by 2.
• When a spell you cast grants a creature temporary hit points, you increase the temporary hit points by an amount equal to your proficiency bonus.
• Any creature that has its AC increased from a spell you cast or that has a protective ward with hit points granted by a spell you cast also has an additional +1 bonus to AC.