School of Summoning

Many wizards dabble in the conjuration and summoning of powerful creatures, but devotees of the School of Summoning are the only ones who have truly mastered the art. Known as summoners, they are experts in the mystical binding of elemental powers and fiendish pacts between demons and devils. While other wizards struggle with controlling their minions, summoners have an indomitable will that bends even the most obstinate to their wishes.

Summoners are powerhouse casters that bring reinforcements to turn the tide of any battle. Through extensive training and years of study, practitioners of the School of Summoning learn techniques that strengthen their familiars to become powerful allies. While other types of wizards—especially conjurers who focus on teleportation—often scoff at the summoner’s devotion to this specific art, they cannot deny the impact made when the cavalry arrives.

Disclaimer: This subclass is not my own, it comes from the Crucible Magazine.

Summoner’s Devotion

Your training has fortified your body against the disruptions of the world around you, and you no longer flinch in even the most heated of battles. You gain advantage on Constitution saving throws made against your concentration to maintain conjuration spells.

Empowered Familiar

 You have learned to channel your arcane powers into this ritual to empower your familiar beyond those typically summoned.

When summoned, an empowered familiar's hit points equal the familiar’s Constitution modifier + your Intelligence modifier + 3 times your wizard level (the familiar has a number of Hit Dice equal to your wizard level). Unlike typical familiars, empowered familiars can take an Attack action in combat. The familiar can move on its own, but the only action it takes on its turn is the Dodge action unless you take a bonus action on your turn to command it to take another action. If you are incapacitated, the empowered familiar can take any action of its choice, not just Dodge.

Transfer Damage

When you or your familiar are hit by damage other than slashing, piercing, or bludgeoning, you can spend your reaction to redirect the damage dealt, taking half (rounded down) and having the other half dealt to your familiar. This damage ignores resistances and immunities

Advanced Familiar

Your empowered familiar ritual casting has dramatically improved, and additional animal forms are available to be chosen: blood hawk, boar, panther, pony, giant badger, giant rat, giant weasel, or wolf. Choose a familiar attribute from the Advanced Familiar table. When next summoned, your familiar’s physical appearance changes to outwardly reflect the attribute chosen, and its stat block has the following additional modifications:

• Damage Resistances: poison and familiar attribute damage type. 
• New Trait: Magic Weapons. The familiar's weapon attacks are considered magical.
• Updated Attack Action: The familiar uses your spell attack modifier to hit, and a hit deals additional damage of the familiar attribute damage type equal to your proficiency bonus.

Advanced Familiar

Attribute	Damage
Astral	Psychic
Celestial	Radiant
Construct	Force
Elemental	Choose one: Fire (fire), Lightning (air), Acid (earth), or Cold (water)
Undead	Necrotic

 

Strengthen Familiar

As a bonus action, you can expend a spell slot to give your familiar a bonus to attack and damage rolls or ability checks and saving throws equal to half the level of the spell slot expended (rounded up). This effect lasts for 10 minutes times the level of the spell slot expended. You can use this feature a number of times equal to your Intelligence modifier (minimum of once) per long rest.

Expanded Spellbook

You add the Conjure Woodland Beings and Conjure Animals spells to your spellbook, and they are considered wizard spells for you and do not count towards your total spells prepared.

Summon Archon Familiar

Your familiar can now take the physical appearance of any creature you have seen; your choice has no effect on its game statistics. Your familiar uses the archon stat block which uses your proficiency bonus (PB) in several places along with your familiar attribute damage type.