Aegis Mark

You ward a creature with a protective sigil.

The target gains a +2 bonus to AC.

When the target is hit by an attack, the attacker has disadvantage on the next attack roll it makes before the end of its next turn.

This spell is stackable, meaning that it can be cast more than once on the target.

At Higher Levels:

When cast using a spell slot of 3rd level or higher, the AC bonus increases to +3. At 5th level or higher, it increases to +4.