Asra's blessing

You call upon your familair to protect you 

This gives you an aura of magic around you which gives you 1 of 4 different types of protection

Lightning, frost, fire or poison

The aura gives you +2 to your ac and resistance to the chosen type

When an enemy comes into contact with you they take 1d4 damage of the chooses type and get knocked back 5 ft

When cast at lvl 5 or higher add 1d4 of damage and 5 ft to the knockback for every lvl higher then 4