Spell Duelist

Spell duelists are imbued with the arcane power of dueling with magic. Some have this power because they are descended from an archmage, and witch hunter, a mage slayer, and a wizard duelist. Other were were caught in a duel between powerful mages and was infected by the magic. The possibilities are endless.

However you get your powers, Spell duelists specialize in fighting other spellcastes. They have tools to deal with nearly any type of spell.

Duelist's Magic

1st level Spell Duelist feature

You learn additional spells when you reach certain levels in this class, as shown on the Dueling Spells table. Each of these spells counts as a sorcerer spell for you, but it doesn't count against the number of sorcerer spells you know.

Dueling Spells

Act First

1st level Spell Duelist feature

You are an expert at duels, letting you react quickly. You gain a bonus to initiative rolls equal to your charisma modifier. During your first round of combat, you have two reactions instead on only one. 

Spell Duel

1st level Spell Duelist feature

You can use your spells to counter enemy's spells. As a reaction when a creature makes a spell attack against you will a level of spell that you can cast, you can use your reaction to cast a cantrip that requires a spell attack, targeting that creature. Instead of making an attack roll, you roll a d20 with a disadvantage and add your spell attack modifier. If the result is higher than the attack roll of the spell targeting you, that spell misses and your cantrip automatically hits. Otherwise, your cantrip misses and the spell attack against you automatically hits.

You can use this feature once, regaining use after a long rest. You can also spend a number of sorcery points equal to the level of the spell targeting you (1 for cantrips) to use this feature if you are out of uses and have sorcery points. 

Combat Concentration

6th level Spell Duelist feature

You can concentrate on difficult spells even in the heat of battle. You gain a bonus to constitution saving throws made to maintain concentration equal to half your proficiency bonus.

In addition, you can break your opponents concentration with ease. When you damage a creature with a cantrip, the target must subtract a number from any constitution saving throws made to to maintain concentration from that damage equal to the level of the spell you damaged them with (1 for cantrips).

Duelist's Mark

14th level Spell Duelist

You are an expert at wizardly duels. As a bonus action, you can put your duelist's mark on a creature within 60 feet of you. The mark lasts for a minute, or until you use your action to reclaim it early. The creature marked by your duelist's mark has a disadvantage on all spell attack rolls made against creatures other than you, and creature's other than you have an advantage on saving throws against spells cast by the creature marked by your duelist's mark. 

The sorcery point cost to use your Spell Duel feature is halved if spell is cast by a creature marked by your duelist's mark.

You can only mark a creature in this way once, regaining use after a long rest. If the marked creature dies or you use your action to reclaim the mark, you regain use of the feature early. 

Arcane Mimicry

18th level Spell Duelist feature

 You can copy your opponents most potent spells. When you counter a spell of 7th level or lower, either with you spell duel feature or with the counterspell spell, you can use this feature to mimic that spell. When you do this, as part of the same reaction, you cast the spell requiring no spell slot. (this is instead of the cantrip if you countered the spell with Spell Duel). If the spell normally targets a creature, you must target the creature who cast the spell.

After this, you learn the spell and it counts as a sorcerer spell for you. You loose the spell after a minute. During this time, the caster looses the spell.

Once you use this feature, you can't do so again until you finish a long rest, unless you spend 9 sorcery points to use it again.