The archetypal Eldritch Knight combines the martial mastery common to all fighters with a careful study of magic. Eldritch Knights use magical techniques similar to those practiced by wizards, They focus their study on two of the eight schools of magic: abjuration and evocation. Abjuration spells grant an Eldritch Knight additional protection in battle, and evocation spells deal damage to many foes at once, extending the fighter's reach in combat. These knights learn a comparatively small number of spells, committing them to memory instead of keeping them in a spellbook. 

Level 3: Spellcasting

When you reach 3rd level, you augment your martial prowess with the ability to cast spells. See chapter 10 for the general rules of spellcasting and chapter 11 for the Wizard spell list.

• Cantrips. You learn two cantrips of your choice from the Wizard spell list. You learn an additional Wizard cantrip of your choice at 10th level.
• Spell Slots. The Eldritch Knight Spellcasting table shows how many spell slots you have to cast 1st-level and higher spells. To cast one of these spells, you must expend a slot of the spell’s level or higher. You regain all expended spell slots when you finish a long rest.
• Spells Known of 1st-Level and Higher. You know three 1st-level wizard spells of your choice, two of which you must choose from the abjuration and evocation spells on the wizard spell list. The Spells Known column of the Eldritch Knight Spellcasting table shows when you learn more wizard spells of 1st level or higher. Each of these spells must be an abjuration or evocation spell. However, when you reach certain levels in this class, you can choose one of the new spells from any school of magic (see exceptions at Levels 8, 14, and 20).
• Spellcasting Ability. Intelligence is your spellcasting ability for your wizard spells, since you learn your spells through study and memorization."

Level 3: War Bond

You learn a ritual that creates a magical bond between yourself and one weapon. You perform the ritual over the course of 1 hour, which can be done during a Short Rest. The weapon must be within your reach throughout the ritual, at the conclusion of which you touch the weapon and forge the bond. The bond fails if another Fighter is bonded to the weapon or if the weapon is a magic item to which someone else is attuned.

Once you have bonded a weapon to yourself, you can't be disarmed of that weapon unless you have the Incapacitated condition. If it is on the same plane of existence, you can summon that weapon as a Bonus Action, causing it to teleport instantly to your hand.

You can have up to two bonded weapons, but you can summon only one at a time with a Bonus Action. If you attempt to bond with a third weapon, you must break the bond with one of the other two.

Level 7: War Magic

When you take the Attack action on your turn, you can replace one of the attacks with a casting of one of your Wizard cantrips that has a casting time of an action.

Level 10: Eldritch Strike

You learn how to make your weapon strikes undercut a creature's ability to withstand your spells. When you hit a creature with an attack using a weapon, that creature has Disadvantage on the next saving throw it makes against a spell you cast before end of your turn.

Level 15: Arcane Charge

Starting at 15th level, when you use your Action Surge feature, you can teleport up to 30 feet to an unoccupied space you can see. You can teleport before or after the additional action.

Level 18: Improved War Magic

When you take the Attack action on your turn, you can replace two of the attacks with a casting of one of your level 1 or level 2 Wizard spells that has a casting time of an action.