Abj
Shield
1st-level Abjuration · PHB, p. 275
Casting Time1 reaction (which you take when you are hit by an attack or targeted by the magic missile spell)
RangeSelf
ComponentsV, S
Duration1 round
ClassesSorcerer, Wizard
Description
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.