Waiting in Ambush
'I hope you won't kill and devour him anytime soon. At least until the Lazarus Project ends.'
Layla said to Eren in private through voice communication in a worried tone. One of the reasons she was uncomfortable letting Ivor parade his powers in front of Eren was because she assumed Eren would aim for the kill straight away. She had spent enough time with him to predict his behavior. Or so she thought.
The three-person team was waiting in ambush for Oliver's forces. Eren had healed Ivor using Instant Reset. The Ability allowed him to heal his allies as well with the efficiency of a healer. At this point, Ivor and Layla had both stopped being surprised by the butcher's class-defying talents.
The trio cleaned the battlefield hastily using one of Layla's potions. They couldn't fix the damage done to the surroundings because of the duel between Eren and Ivor. But the butcher did the next best thing by covering the battlefield with his wood-element spell Woodland Wonderland.