Spells

Shield

School: Abjuration
Level: 1 (Sorcerer, Wizard)
Casting Time: 1 reaction, which you take when you are hit by an attack or targeted by the magic missile spell
Range/Area: Self
Components: V, S
Duration: 1 round

An invisible barrier of magical force appears and protects you. Until the start of your next turn, you have a +5 bonus to AC, including against the triggering attack, and you take no damage from magic missile.

Player's Handbook. Wizards of the Coast, 2014.