Divinity: Original Sin 2

Creator: Baardvaark

Features:

On entering combat, non-summon, non-player characters will receive a random buff, from standard stuff like Fortified, to a "Teleporter" status, which grounds them and grants them the teleport skill. There are 28 statuses! Enemies buffed this way have a 10% chance to drop extra gold, scrolls, skillbooks, ingredients, and even magical items.
Enemies also have a 1 in 8 chance to become champions, which are extra powerful enemies that usually grant extra skills. They drop extra loot (such as a skillbook, potion, or rare or legendary item), and if an existing boss (e.g., Alexander) becomes a champion, they are guaranteed to drop a legendary!
Optionally, you can enable "enemy copies", which will give a chance for non-boss characters to copy themselves and appear randomly near their mirrored friend.
All features customizable. Regular buffs, champions, copies, and extra loot can be turned off or tweaked in their chances. Speak to the Puppet of Randomization, who is located by the Fort Joy Beach waypoint, or by the Sargent on the bottom floor of the Lady Vengeance.