Tried to give more identity to the Trickery subclass.
The PnP Mirror Image and UA6 Invoke Duplicity are both great additions. The latter will override my changes to Invoke Duplicity with something actually unique to BG3, just load it after my mod.

Level 1
Proficiency with Rapiers, Longswords, Shortswords, Scimitars and Hand Crossbows.
Blessing of the Trickster requieres no concentration, can be cast on self, lasts until long rest, only affects one person.

Level 2
Invoke Duplicity is now a 10 turn no concentration buff that lets you summon the duplicate for a bonus action and no concentration. Can move it around or resummon if it gets destroyed.

Level 3
A selection of 2 skills from Sleight of Hand, Stealth, Perception and Deception.

Level 6
Improved Minor Illusion cantrip, as per Illusion School wizard subclass level 2 feature.
Shaded Magic passive, "While you are benefitting from Blessing of the Trickster or invisible, you gain a +1 bonus to your Spell Save DC."
Cloak of Shadows now grants Greater Invisibility for 3 turns.

Level 7
Confusion instead of Polymorph as a domain spell.

Level 8
Divine Strike deals 1d12 (up from 1d8) weapon damage per turn, has the same requirements as Sneak Attack save for the mandatory finessable weapon.
Also removed the annoying usable Divine Strike skill, kept just the reactions.


Installation
BG3 Mod Manager

Compatibility
Modifies Blessing of the Trickster and Invoke Duplicity spells and Trickery Domain progression levels 1, 3, 6, 7 and 8, so will conflict with anything changing the same