Augment Familiar

This spell grants your familiar a +2 bonus to AC and saving
throws. If your familar has an attack, the attack now deals
1d8 damage of the same type it does normally, adds your
spell attack to it's chance to hit and can now use it's attack in
combat for the duration. As well your familiar gains 2d10
temporary hit points until the spell ends.
At higher levels. When cast using a spell slot of 4th level
the damage and temporary hitpoints gained are doubled to
2d8 damage and 4d10 temporary hit points, and the duration
is increased to 24 hours.