Battlemage

Spellcasting. The mage is a 3rd-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 12, +4 to hit with spell attacks). The mage has the following wizard spells prepared:

Cantrips (at will): fire bolt, light, Green Flame Blade, prestidigitation

1st level (4 slots): sleep, mage armor, magic missile, shield

2nd level (3 slots): magic weapon, invisibility

Longsword. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 6 (1d8 + 2) slashing damage, or 7 (1d10 + 2) slashing damage if used with two hands.

Action Surge (1/Day). The Mage can take another attack action.

Arcane Ward. As a reaction the Battlemage can add +2 to their AC or +4 to saving throws, until the end of it's next turn, the Battlemage can only cast cantrips.