Eldritch Invocations - Bonded Dragon Patron

Breath Weapon
Prerequisite: eldritch blast cantrip, Bonded Dragon feature.
Dragon magic is elemental magic, and a dragon's breath weapon is one of the simplest expressions of this power. Although the bond has weakened many of your Dragon's draconic attributes, it has enhanced its magical potential, and this invocation brings back some of its lost power.
When you command your Dragon to cast eldritch blast, you can choose to change it into an area attack with a DC saving throw, which is different for each dragon and listed in the Dragon Student table. It damages all creatures in the area. Instead of firing additional beams, its breath weapon deals an additional 1d10 damage at 5th level, 11th level, and 17th level this way. A creature takes half damage on a successful save.
If you possess the Agonizing Blast invocation, then when you deal damage with your eldritch blast cantrip this way, each creature that suffers damage takes additional damage of the same type equal to your Charisma modifier (minimum of 1) times the number of d10's of this breath weapon

Dragon Warrior
Prerequisite: Pact of the Dragon feature.
You gain proficiency with medium armor, shields, and martial weapons.
Whenever you finish a long rest, you can touch one melee weapon that you are proficient with and that lacks the two-handed property. When you attack with that weapon, you can use your Charisma modifier, instead of Strength or Dexterity, for the attack and damage rolls. It counts as a magic weapon. This benefit lasts until you finish a long rest

Draconic Smite
_Prerequisite: 5th-level, Pact of the Dragon feature _
Once per turn when you hit a creature with a melee weapon, you can expend a warlock spell slot to deal an extra 1d8 damage of the type associated with your dragon student to the target, plus another 1d8 per level of the spell slot, and you can knock the target prone if it is Huge or smaller.
Flying creatures will count as prone for game mechanics.

Improved Breath Weapon
Prerequisite: 5th-level, Breath Weapon invocation, Pact of the Dragon feature.
When you command your dragon to cast eldritch blast as a breath weapon, you can double its range (a cone becomes 30-foot, and a line becomes 60-feet long and 10 feet wide).

Improved Dragon Warrior
Prerequisite: 5th-level, Dragon Warrior invocation, Pact of the Dragon feature.
You can use any weapon that you enhanced with your Dragon Warrior invocation as a spellcasting focus for your warlock spells. You can summon it to your hand as an action as long as it is on the same plane of existence as you.
Once on each of your turns, when you hit a creature with this weapon, the creature takes an extra 1d8 damage of the type associated with your dragon student. When you reach 14th level, the extra damage increases to 2d8.

Advanced Dragon Magic
Prerequisite: 7th-level, Pact of the Dragon feature.
Your dragon's bite deals additional damage equal to your Charisma modifier (minimum of 1) of the type associated with your dragon student. In addition, all its attacks count as magical for the purpose of overcoming resistance and immunity to nonmagical attacks and damage.
When your dragon receives temporary hit points through the Pact of the Dragon feature, you can add your Charisma modifier (minimum of 1) to this amount.

Dragon Rider
Prerequisite: 7th-level, Pact of the Dragon feature.
When you take the Attack action on your turn to make a melee weapon attack (or the Ready action to prepare a melee weapon attack) while riding your dragon, you can now use your bonus action to command your dragon to cast a cantrip spell. You can only make one attack with the Attack action this way. You and your dragon combined can only cast one spell per turn this way.

Gifted Student
Prerequisite: 7th-level, Pact of the Dragon feature.
The number of temporary hit points that your dragon receives through the Pact of the Dragon feature increases by 3. When your dragon receives these temporary hit points, you can give them to another creature you can see (including yourself) within 60 feet of your dragon instead. Afterwards, that creature cannot receive temporary hit points this way again until it finishes a short or long rest.
When your dragon regains hit points while in combat, you can choose to regain these hit points yourself instead, provided you are within 60 feet of your dragon.

Elemental Fury
Prerequisite: 12th-level, Pact of the Dragon feature.
All damage that you and your dragon deal ignores resistance against your dragon student's damage type.

Combine Magic
Prerequisite: 15th-level, Pact of the Dragon feature.
If a Dragon Master shares a particularly strong bond with his or her dragon, the pair can even cast spells together that combine the best of the mortal and dragon forms of magic, going where no mortal or dragon could go before.

When you use your action to command your dragon to cast a warlock spell that expends a spell slot and deals damage, you can use your bonus action to deal maximum damage with that spell if your dragon is within 30 feet of you. When you use this feature, you can choose any number of creatures that you can see. The chosen creatures automatically succeed on their saving throws against the spell and take no damage from the spell.

The first time you do so, you and your dragon each suffer 2d12 force damage due to the feedback. If you use this invocation again before finishing a long rest, the force damage increases by 2d12. This damage ignores temporary hit points, resistance, and immunity.