Templar

As a Templar, you have pledged yourself to saving those who cannot protect themselves, and you're not against using less honourable tactics to do so.  You have harnessed your own willpower to cast spells, not only to help yourself on your journey of redemption, but also to seek vengeance on those who've wronged you.

Level 3: Strength of Will

You learn 2 cantrips from the Warlock spell list.

You gain a number of spell slots equal to your Constitution Modifier + Proficiency bonus.  Each of these spell slots is treated as a Level 1 spell slot.  Constitution is your spellcasting ability for spells and cantrips learned from this subclass.  You regain all spell slots upon finishing a long rest.  You will learn new spells as you progress through this subclass.

To cast spells of a higher level, you must expand an additional spell slot granted from this feature equal to the level of spell you wish to cast.  (Ex.  To cast the spell Haste, you must expand 3 spell slots granted by this feature.  You cannot expand spell slots past 5th level.)

Your own will is your spellcasting focus.  If you need to make a check that requires a Wisdom saving throw, you cannot cast spells until you succeed the save or the condition ends.

You learn the following spells:

• Shield
• Hellish Rebuke
• Branding Smite

Level 7: Sinful Penance

Your sheer willpower causes others around you to feel the weight and pain of their sins.  As an action, you can make a melee attack against a target, they must make a Constitution saving throw against your spell save DC.  If they succeed, they move 5ft away from you.  If they fail, you can expand a number of spell slots up to half your Fighter level rounded-down and inflict an equal number of D10 of psychic damage to the target.  You cannot make any additional attacks the turn you use this ability.

You learn the following spells:

• Cloud of Daggers
• Hold Person

Level 10: Contagious Willpower

Allies within 10ft of you gain advantage on Constitution saving throws.

You learn an additional cantrip from the Warlock spell list.

You learn the following spells:

• Haste
• Counterspell

Level 15: No Rest for the Wicked

Upon taking a short rest, you can roll 1D6 and regain a number of expanded spell slots equal to the result.  You cannot use this feature again until you've finished a long rest.

You learn the following spells:

• Banishment
• Staggering Smite

Level 18: Final Stand

You charge towards a target of your choice within your movement range and make a melee weapon attack against it.  If the attack fails, the target can make an opportunity attack against you.  If the attack is successful, you expand all remaining spell slots and add an equal number of the dice used for the attack roll of the attack to the damage roll.  If the target falls to 0 HP from this attack, you gain 2 levels of exhaustion.