She casts Dispel Magic as a Bonus Action and adds her proficiency bonus to the ability check.

When she casts an Abjuration spell with a spell slot, she can create a magical ward on herself that lasts until a Long Rest. The ward has 46 hit points, equal to twice her wizard level plus her Intelligence modifier. Damage is applied to the ward first, after resistances and vulnerabilities are applied. When she casts an Abjuration spell with a spell slot, or spends a spell slot as a Bonus Action, the ward regains 2 hit points per spell level expended.

She can interpose her Arcane Ward to absorb damage from an ally within 30 feet as a Reaction.

She exhales a cone or line of caustic poison energy, shaped by ancient draconic instinct and reinforced by battle-honed magic.

She manifests spectral wings of green arcane force and gains a flying speed for up to 10 minutes once per Long Rest.

She casts Shield or Absorb Elements with perfect economy, replenishing her ward while preserving tactical control.

You know the wizard spellcasting rules, use Intelligence as your spellcasting ability, can prepare wizard spells from your spellbook, and can use an Arcane Focus or your spellbook as a spellcasting focus. At level 20, your prepared spell list normally contains 26 level 1+ wizard spells, not counting always-prepared subclass or feat spells.

You can cast any spell with the Ritual tag as a ritual if that spell is in your spellbook, even if it is not prepared, provided you read from the book.

After a Short Rest, you can recover expended spell slots whose combined levels are up to 10, but none higher than 5th level. You can do this once per Long Rest.

Choose one Wizard subclass. Maa'raxia's school is Abjuration, the study of barriers, banishment, and magical defense.

Choose two Wizard spells from the Abjuration school, each no higher than 2nd level, and add them to your spellbook for free. Maa'raxia's free choices are Shield and Absorb Elements. Whenever she gains access to a new spell slot level, she adds one Abjuration spell of that level to her spellbook for free.

She has Advantage on saving throws against spells and Resistance to damage from spells.

At 19th level, she gains an Epic Boon feat. Maa'raxia takes Boon of Spell Recall, reflecting her mastery over conserving and reclaiming arcane power.

At 20th level, she chooses two 3rd-level wizard spells in her spellbook as signature spells. Maa'raxia's signature spells are Counterspell and Dispel Magic. Each is always prepared and can be cast once at 3rd level without expending a spell slot, refreshing after a Short or Long Rest.

You know where and from whom you can obtain information about a wide variety of lore, especially arcane, scholarly, and historical matters. In practice, your old academic contacts and library habits always seem to open at least one door.