Level 2
Spell Sculpt
When you cast an evocation spell that affects other creatures that you can see, you can choose a number of them equal to 1 + your proficiency bonus. The chosen creatures automatically succeed on their saving throws against the spell, and they take no damage if they would normally take half damage on a successful save.
Level 6
Potent Spells
Whenever you cast an evocation spell that does damage, you can add your Intelligence to one damage roll of that spell.
Level 9
Overcharge
Whenever you cast a spell that deals damage, you can deal maximum damage with that spell. The first time you do so, you suffer no adverse effect. If you use this feature again before you finish a long rest, you take 1d6 necrotic damage immediately after you cast it. Each time you use this feature again before finishing a long rest, the necrotic damage per spell level increases by 1d6. This damage ignores resistance and immunity.