Thunder Shield

4th-level evocation

Casting Time: 1 reaction, taken when you or a creature within the radius is targeted by a ranged attack or forced to make a dexterity saving throw

1 reaction, taken when you or a creature within the radius is targeted by a ranged attack or forced to make a dexterity saving throw Range: Self (15 ft radius)

Self (15 ft radius) Components: V S

V S Duration: 1 round

1 round Class Availability: Sorcerer

A rippling field of thunderous energy expands out from you in a wave, deflecting projectiles and elemental energy. Creatures within the radius (including you) when subjected to an effect that allows them to make a Dexterity saving throw to take only half damage, instead take no damage if they succeed on the saving throw, and only half damage if they fail, and have +5 AC against ranged attacks until the start of your next turn. This applies to the triggering attack or effect. In addition, ranged attacks made from inside the radius are made at disadvantage.

If a creature leaves the area, they lose the benefits of this spell. If a creature enters the area after the spell is cast, they gain the benefits of this spell from the moment they enter the radius until they leave the radius or the spell ends.

You cannot trigger this ability as a reaction to a spell or attack you make.