Invoke Duplicity is a 
Action. This ability allows a Cleric to summon an illusory duplicate of themselves that improves the hit chances of allied creatures against nearby enemies.
Description
Distract your enemies with an illusion. Within 
3 m / 10 ft, Attack Rolls have 
Advantage for you and your allies.
Both the attacker and the creature must be within 3 m / 10 ft of the illusion.
Properties
- Cost:
-
Action + 
Channel Divinity Charge - Details:
- Range: 9 m / 30 ft
-
Duration: 10 turns
AoE: 3 m / 10 ft (Radius) (effect of the Advantage granted by the duplicate)
How to learn
Classes:
- Class level 2: Trickery Domain