An Eclectic Collection of Fun and Effective Builds

[CheddarChampion]

The Core Trick: Permanent Proning an enemy.
Basically your core trick is to move up to melee range, quicken a Grease Spell with it affecting your ideal foe, then sacrifice one melee attack to Grapple him, then continue to stab with GFB or BB until he is dead, then cast Lighting Lure to drag another target into the Grease Trap.

Both Shadow Blade and (Quickened) Grease use your concentration. And your bonus action when you cast them. You can still BB/GFB though.
BTW, why pick up grappler if you're going to attack a prone enemy?