Spell Revisionist, Evocation

 You have an expertise over how to manipulate the weave when learning new Evocation spells. When you learn an Evocation spell you can choose to alter the elements in its design to conform to your desire. You can change the spell permanently when you learn it, making it a new spell entirely:

• When learning an Evocation spell that deals acid, bludgeoning, cold, fire, lightning, piercing, poison, slashing, or thunder damage, you may change the damage to instead cause a different damage type from the following; acid, bludgeoning, cold, fire, lightning, piercing, poison, slashing, or thunder.
  
  
• When learning an Evocation spell that invokes a Dexterity, Strength, or Constitution saving throw you may instead make it invoke a different saving throw from the following; Dexterity, Strength, or Constitution.