Runechild Sorcerer replacement spell workaround add-on Feat

Runic Magic

1st-level Runechild Sorcerer, Runic Magic feature

Beginning at 1st level, you learn additional spells when you reach certain levels in this class, as shown on the Runic Spells table. Each of these spells counts as a sorcerer spell for you, but it doesn’t count against the number of sorcerer spells you know.

When you gain a level in this class, you can replace one spell you gained from this feature with another spell of the same level. The new spell must be an abjuration or transmutation spell from the sorcerer, warlock, or wizard spell list.

(Base, Abjuration/Transmutation) 2 known spells at each SorcererLevel of SpellLevel shown below.   

SorcererLevel:    SpellLevel 

SorcererLevel1, 1st – Longstrider, Protection from Evil and Good, Absorb Elements, Alarm, Armor of Agathys, Catapult, Expeditious Retreat, Feather Fall, Jump, Mage Armor, Shield, Snare, [**Magnify Gravity], ^ Wardaway 

SorcererLevel3:  2nd – Lesser Restoration, Protection from Poison, Alter Self, Arcane Lock, Blindness/Deafness, Darkvision, Dragon’s Breath, Earthbind, Elminster's Elusion, Enhance Ability, Enlarge/Reduce, Knock, Levitate, Magic Weapon, Maximilian’s Earthen Grasp, Pyrotechnics, Rope Trick, Skywrite, Spider Climb, ***Kinetic Jaunt, ***Immovable Object, ^ Arcane Vigor 

SorcererLevel5:  3rd – Glyph of Warding, Magic Circle, Blink, Counterspell, Dispel Magic, Erupting Earth, Flame Arrows, Fly, Gaseous Form, Haste, Intellect Fortress, Nondetection, Proctection From Energy, Remove Curse, Slow, Tiny Servant, Water Breathing, Water Walk, + Ashardalon’s Stride

SorcererLevel7:  4th – Death Ward, Freedom of Movement, Backlash, Banishment, Control Water, Elemental Bane, Fabricate, Mordenkainen’s Private Sanctum, Otiluke's Resilient Sphere, Polymorph, Stoneskin, Stone Shape, ^ Backlash

SorcererLevel9:  5th – Greater Restoration, Telekinesis, Animate Objects, Control Winds, Passwall, Planar Binding, Skill Empowerment, Transmute Rock, [**Temporal Shunt], ^ Alustriel's Mooncloak

+ Fizban
*Star Spell per DM permission, ruling:  **Explorer's Guide to Wildemount source book Transmutation School or Abjuration School spells - **Dunamancy; **Chronurgy or **Graviturgy from Wildemount, not really now seen as Transmutation or Abjuration but y'all do you. I would. 
***Strixhaven, ^ Newer books