High Order

This is meant to be much like the Arcane Trickster. Where they use wizard spells. The High Order Rouge uses cleric Spells. 

Spellcasting

When you reach 3rd level, your belief allows you to mix martial prowess with the ability to cast cleric spells.
Cantrips You learn three cantrips: one must include bless and two other cantrips of your choice from the cleric spell list. You learn another cleric cantrip of your choice at 10th level.
Spell Slots

Divine Inspiration

Starting at 3rd level, your connection to your faith helps guide your weapons. If you make a weapon attack while you are concentrating on a spell from the cleric spell list, you gain advantage on the attack roll

Tools of the order

At 9th level, you learn to augment your weapons with the power of your order. The additional damage of your sneak attack is either radiant or necrotic ( your choice), and when you deal sneak attack damage to a creature, the entire attack is considered magical for the purpose of overcoming resistance to non magical damage. Lastly, if the creature is an undead or a fiend, they also take an additional 2d6 sneak attack damage.

Mark of the faithful

Starting at 13th level, your faithfulness alters the essence of your soul, and you learn to recognize similar signs in others. You are considered both a paladin and a cleric for the purpose of attuning to magical items. Additionally, you can cast the spell Detect Evil and Good at will without expending a spell slot.

Damnation and Salvation

At 17th level, you have the power to punish the wicked and spare the pure. When you deal sneak attack damage to a creature, you can immediately use a bonus action to restore an equal amount of hit points to another creature within 30 feet of you. You can use this bonus action a number of times equal to your wisdom modifier. You regain all expended uses when you finish a long rest.