Champions spawns depends on the encounters for example in the mausoleum 3 can spawn: One with the subjugator bosses One with the orange tumors One when we have to carry the orange cristal But i never seen champions when we have to capture the two plate with the Husk swarm then i never seen champion when we have to capture the singe plate where's a load's of Grim and i never seen one when we have to kill 3 wizards The Abbys is the same: One can spawn at the two subjugator boss One can spawn when we have to carry the orange cristal And one can spawn with the tormentor Court of Oryx : One can spawn with the tormentor One can spawn with the ball depositing encounter But i dont remember seeing a third one but probably there is a third one Puffer fish boss: One can spawn with the orange tumors One can spawn with the two subjugator And one can spawn with the ball depositing encounter Champions doesn't spawn if you don't get these encounters