Backblast

This spell enables the caster to hurl back spells involving flames or fiery explosions automatically at their source(s). Magical item effects and even the most powerful spells (such as Meteor Swarm) are affected.

The spell protects a single being, usually the caster, but it may be another touched during spellcasting; once casting is complete, the protection cannot be transferred.

Once cast, this spell continues until it is activated, expires after 8 hours, Dispel Magic is successfully cast on the protected being, the protected being dies, or travels to another plane.

When a fiery spell attack strikes, the Backblast functions automatically; the being cannot choose to take the damage and keep the protection for later.

Once activated, a Backblast spell works for the entire round and then ends. It can reflect back all fiery attacks in that round: for example, several Fireball spells.

A Backblast will send back a spell (a Delayed Blast Fireball, for instance) over vast distances to a source who has left the scene, but can't follow a source onto another plane. In such cases, the attacking magic is negated.