Gloria the Griefer

The reason for this deck's existence is solely to grief your friends as much as humanly possible. I also threw in Clairvoyance (5), just for plausible deniability that your deck is actually completely normal, you promise! The griefing game plan has three parts.

Part 1: Put fear in the hearts of your friends by making them fail important tests. Put out Nkosi Mabati, and pick the auto-fail token as your sigil. Now, you can make your friends at your location fail tests on demand! Is your Seeker basically guaranteed to pick up 4 clues this action with Fingerprint Kit (4) and Deduction (2)? Not anymore! If you've already used Nkosi Mabati's ability this turn, you can always force your friends to redo that test they barely succeeded, against all odds, by using Time Warp.

Part 2: Use your encounter deck manipulation powers for evil, not good. This deck includes the standard set of Gloria encounter deck manipulation cards that you'd usually use to give your friends the softer cards and discard the nastier ones. This time, you simply give them the bad cards instead! This also includes using Delve Too Deep and Drawn to the Flame to draw encounter cards on command, and "You handle this one!", Deny Existence, and Ward of Protection to push all the consequences onto your friends.

Part 3: Channel your inner Rogue. "I'll Pay You Back!" and "You owe me one!" let you steal resources or important cards from your friends ("You didn't need that 5xp card, did you?"). Are your friends not hurt enough by the enemies you gave them? Use your incredible 1 to Backstab them! Finally, if your Seeker is all alone or your fighter hasn't found a weapon yet, use Ethereal Slip (2) to teleport an enemy right to their front door while you keep your hands clean on the other side of the map.

Happy griefing!

(Probably best used in standalone, because you'll probably stand alone after your game is done.)