Variant 2.1 - Green Goblin switching nodes
In the left section of the map, there is a Green Goblin with the global node Spite, as well an the local node Power Gain.
After trying to battle him once, the game crashed. When it came back, I did a fight and lost. Then in the next fight, he switched local nodes. Instead of having the local node Power gain, he then had the Buffet node, which made him heal more HP than what he started the fight since I didn't used a champion to counter buffet.